**Please fix the errors in the code ! I've used Turbo C++. I need it for my High School Project
**

#include<iostream.h>
#include<iomanip.h>
#include<conio.h>
#include<process.h>
#include<fstream.h>
#include<string.h>
#include<stdio.h>
//logistics
//site fees
//transaction fee
//packaging fee
//FK
//SD
//AZ
//PayTM
//eBay
//ShopClues

char categdisplay();
char logdisplay();
char wbdisplay();
void display();



char i[40],j[40],k[40];


class Expenditures
{        public:
    int logfee;
    float x,y,z,exp,a,b,trfee,mkpfee,pkfee,t;
    Expenditures()
    {
    trfee=0;
    mkpfee=0;
    pkfee=0;
    x=0;
    cout<<endl<<"Calaculating..........<<endl";
    }



       float finalvfee(int wb,int category)
    {   float fvfee;
            switch(wb)
        {case 1: switch(category)//Flipkart
            {
                            case 1: fvfee=(10/sp)*100; break;
                            case 2: fvfee=(10/sp)*100; break;
                            case 3: fvfee=(4/sp)*100; break;
                            case 4: fvfee=(8/sp)*100; break;
                            case 5: cout<<"This Category Cannot be sold on this Website"; exit(0);
                            case 6: fvfee=(10/sp)*100; break;
                            case 7: cout<<"This Category Cannot be sold on this Website"; exit(0);
                            case 8: cout<<"This Category Cannot be sold on this Website"; exit(0);
                            case 9: fvfee=(10/sp)*100; break;
                            case 10: fvfee=(10/sp)*100; break;
                            case 11: fvfee=(10/sp)*100; break;
                            case 12: fvfee=(10/sp)*100; break;
                            case 13: fvfee=(10/sp)*100; break;
                            case 14: fvfee=(10/sp)*100; break;
                            case 15: fvfee=(10/sp)*100; break;
                            case 16: fvfee=(10/sp)*100; break;
                            case 17: fvfee=(4/sp)*100; break;
                            case 18: fvfee=(5/sp)*100; break;
                            case 19: fvfee=(4/sp)*100; break;
                            case 20: fvfee=(4/sp)*100; break;
                            case 21: fvfee=(4/sp)*100; break;
                            case 22: fvfee=(4/sp)*100; break;
                            case 23: fvfee=(10/sp)*100; break;
                            case 24: fvfee=(8/sp)*100; break;
                            case 25: cout<<"This Category Cannot be sold on this Website"; exit(0);
                            case 26: fvfee=(10/sp)*100; break;
                            case 27: cout<<"This Category Cannot be sold on this Website"; exit(0);
                            case 28: fvfee=(10/sp)*100; break;
                            case 29: fvfee=(4/sp)*100; break;
                            case 30: fvfee=(10/sp)*100; break;
                            case 31: fvfee=(12/sp)*100; break;
                            case 32: fvfee=(10/sp)*100; break;
                            case 33: fvfee=(10/sp)*100; break;
                            case 34: fvfee=(4/sp)*100; break;
                            case 35: fvfee=(4/sp)*100; break;
                            case 36: cout<<"This Category Cannot be sold on this Website"; exit(0);
                            default: cerr<<"Wrong Choice!!"; exit(0);
                            }

                case 2: switch(category)//SnapDeal
                            {
                            case 1: fvfee=(0/sp)*100; break;
                            case 2: fvfee=(0/sp)*100; break;
                            case 3: fvfee=(0/sp)*100; break;
                            case 4: fvfee=(0/sp)*100; break;
                            case 5: fvfee=(0/sp)*100; break;
                            case 6: fvfee=(0/sp)*100; break;
                            case 7: fvfee=(0/sp)*100; break;
                            case 8: fvfee=(0/sp)*100; break;
                            case 9: fvfee=(0/sp)*100; break;
                            case 10: fvfee=(0/sp)*100; break;
                            case 11: fvfee=(0/sp)*100; break;
                            case 12: fvfee=(0/sp)*100; break;
                            case 13: fvfee=(0/sp)*100; break;
                            case 14: fvfee=(0/sp)*100; break;
                            case 15: fvfee=(0/sp)*100; break;
                            case 16: fvfee=(0/sp)*100; break;
                            case 17: fvfee=(0/sp)*100; break;
                            case 18: fvfee=(0/sp)*100; break;
                            case 19: fvfee=(0/sp)*100; break;
                            case 20: fvfee=(0/sp)*100; break;
                            case 21: fvfee=(0/sp)*100; break;
                            case 22: fvfee=(0/sp)*100; break;
                            case 23: fvfee=(0/sp)*100; break;
                            case 24: fvfee=(0/sp)*100; break;
                            case 25: fvfee=(0/sp)*100; break;
                            case 26: fvfee=(0/sp)*100; break;
                            case 27: fvfee=(0/sp)*100; break;
                            case 28: fvfee=(0/sp)*100; break;
                            case 29: fvfee=(0/sp)*100; break;
                            case 30: fvfee=(0/sp)*100; break;
                            case 31: fvfee=(0/sp)*100; break;
                            case 32: fvfee=(0/sp)*100; break;
                            case 33: fvfee=(0/sp)*100; break;
                            case 34: fvfee=(0/sp)*100; break;
                            case 35: fvfee=(0/sp)*100; break;
                            case 36: fvfee=(0/sp)*100; break;
                            case 37: fvfee=(0/sp)*100; break;
                            default: cerr<<"Wrong Choice!!";
                            exit(0);
                            }



                case 3://Amazon

                                    if(sp<250)
                                    {fvfee=0;}

                                    else if(sp>250&&sp<500)
                                    {fvfee=5;}
                                    else if(sp>500)
                                    {fvfee=10;}
                                    break;


                case 4:     switch(category)//PayTM
                            {
                            case 1: fvfee=(7/sp)*100; break;
                            case 2: fvfee=(7/sp)*100; break;
                            case 3: cout<<"This Category Cannot be sold on this Website"; exit(0);
                            case 4: fvfee=(7/sp)*100; break;
                            case 5: fvfee=(2.5/sp)*100; break;
                            case 6: fvfee=(14/sp)*100; break;
                            case 7: fvfee=(2/sp)*100; break;
                            case 8: fvfee=(5/sp)*100; break;
                            case 9: fvfee=(8/sp)*100; break;
                            case 10: fvfee=(7/sp)*100; break;
                            case 11: fvfee=(7/sp)*100; break;
                            case 12: fvfee=(9/sp)*100; break;
                            case 13: fvfee=(15.2/sp)*100; break;
                            case 14: fvfee=(4/sp)*100; break;
                            case 15: fvfee=(2/sp)*100; break;
                            case 16: fvfee=(15/sp)*100; break;
                            case 17: fvfee=(2/sp)*100; break;
                            case 18: fvfee=(6/sp)*100; break;
                            case 19: fvfee=(5/sp)*100; break;
                            case 20: fvfee=(2/sp)*100; break;
                            case 21: fvfee=(10/sp)*100; break;
                            case 22: fvfee=(2.5/sp)*100; break;
                            case 23: fvfee=(9/sp)*100; break;
                            case 24: fvfee=(5/sp)*100; break;
                            case 25: cout<<"This Category Cannot be sold on this Website"; exit(0);
                            case 26: fvfee=(12/sp)*100; break;
                            case 27: cout<<"This Category Cannot be sold on this Website"; exit(0);
                            case 28: fvfee=(8/sp)*100; break;
                            case 29: fvfee=(2/sp)*100; break;
                            case 30: fvfee=(15/sp)*100; break;
                            case 31: fvfee=(15/sp)*100; break;
                            case 32: fvfee=(12/sp)*100; break;
                            case 33: fvfee=(7/sp)*100; break;
                            case 34: cout<<"This Category Cannot be sold on this Website"; exit(0);
                            case 35: fvfee=(14/sp)*100; break;
                            case 36: fvfee=(9/sp)*100; break;
                            case 37: fvfee=(8/sp)*100; break;
                            default: cerr}
                                    break;


            case 5:     switch(category)//eBay
                            {
                            case 1: fvfee=(5/sp)*100; break;
                            case 2: fvfee=(6/sp)*100; break;
                            case 3: fvfee=(4/sp)*100; break;
                            case 4: fvfee=(7/sp)*100; break;
                            case 5: cout<<"This Category Cannot be sold on this Website"; exit(0);
                            case 6: fvfee=(7/sp)*100; break;
                            case 7: fvfee=(7/sp)*100; break;
                            case 8: fvfee=(7/sp)*100; break;
                            case 9: fvfee=(7/sp)*100; break;
                            case 10: fvfee=(5/sp)*100; break;
                            case 11: cout<<"This Category Cannot be sold on this Website"; exit(0);
                            case 12: fvfee=(5/sp)*100; break;
                            case 13: fvfee=(7/sp)*100; break;
                            case 14: fvfee=(5/sp)*100; break;
                            case 15: fvfee=(7/sp)*100; break;
                            case 16: fvfee=(5/sp)*100; break;
                            case 17: fvfee=(2/sp)*100; break;
                            case 18: fvfee=(1/sp)*100; break;
                            case 19: fvfee=(1/sp)*100; break;
                            case 20: fvfee=(5/sp)*100; break;
                            case 21: fvfee=(1/sp)*100; break;
                            case 22: fvfee=(1/sp)*100; break;
                            case 23: fvfee=(6/sp)*100; break;
                            case 24: fvfee=(7/sp)*100; break;
                            case 25: cout<<"This Category Cannot be sold on this Website"; exit(0);
                            case 26: fvfee=(7/sp)*100; break;
                            case 27: fvfee=(5/sp)*100; break;
                            case 28: fvfee=(6/sp)*100; break;
                            case 29: fvfee=(1/sp)*100; break;
                            case 30: fvfee=(6/sp)*100; break;
                            case 31: fvfee=(7/sp)*100; break;
                            case 32: fvfee=(6/sp)*100; break;
                            case 33: fvfee=(7/sp)*100; break;
                            case 34: fvfee=(5/sp)*100; break;
                            case 35: fvfee=(2/sp)*100; break;
                            case 36: fvfee=(2.5/sp)*100; break;
                            case 37: fvfee=(7/sp)*100; break;
                            default : cerr<<"Wrong Choice!!"; exit(0);
                            break;
                            }


            case 6:     switch(category)//ShopClues
                            {
                            case 1: fvfee=(12/sp)*100; break;
                            case 2: fvfee=(15/sp)*100; break;
                            case 3: fvfee=(7/sp)*100; break;
                            case 4: fvfee=(12/sp)*100; break;
                            case 5: cout<<"This Category Cannot be sold on this Website"; exit(0);
                            case 6: fvfee=(15/sp)*100; break;
                            case 7: cout<<"This Category Cannot be sold on this Website"; exit(0);
                            case 8: cout<<"This Category Cannot be sold on this Website"; exit(0);
                            case 9: fvfee=(12/sp)*100; break;
                            case 10: fvfee=(17/sp)*100; break;
                            case 11: cout<<"This Category Cannot be sold on this Website"; exit(0);
                            case 12: fvfee=(12/sp)*100; break;
                            case 13: fvfee=(14/sp)*100; break;
                            case 14: fvfee=(6/sp)*100; break;
                            case 15: fvfee=(17/sp)*100; break;
                            case 16: fvfee=(15/sp)*100; break;
                            case 17: fvfee=(4/sp)*100; break;
                            case 18: fvfee=(6/sp)*100; break;
                            case 19: fvfee=(4/sp)*100; break;
                            case 20: fvfee=(12/sp)*100; break;
                            case 21: fvfee=(6/sp)*100; break;
                            case 22: fvfee=(6/sp)*100; break;
                            case 23: fvfee=(15/sp)*100; break;
                            case 24: cout<<"This Category Cannot be sold on this Website"; exit(0);
                            case 25: cout<<"This Category Cannot be sold on this Website"; exit(0);
                            case 26: fvfee=(15/sp)*100; break;
                            case 27: cout<<"This Category Cannot be sold on this Website"; exit(0);
                            case 28: fvfee=(15/sp)*100; break;
                            case 29: fvfee=(6/sp)*100; break;
                            case 30: cout<<"This Category Cannot be sold on this Website"; exit(0);
                            case 31: fvfee=(12/sp)*100; break;
                            case 32: fvfee=(8/sp)*100; break;
                            case 33: fvfee=(15/sp)*100; break;
                            case 34: fvfee=(20/sp)*100; break;
                            case 35: fvfee=(8/sp)*100; break;
                            case 36: fvfee=(10/sp)*100; break;
                            case 37: fvfee=(10/sp)*100; break;
                            default : cerr<<"Wrong Choice!!"; exit(0);
                            break;
                            }
                    y=fvfee;
                    return y;
            }
        }


    void logistics(int city,int w,int cod,int log)
    {
    int l,choice1, choice2,logfee;
    switch(log)
    {
        case 1: if(city==1)
                {if (w<500){logfee=30;}
                    else if(w>501 && w<1000){logfee=30+(1*(35)); break;}
                    else if(w>1001 && w<1500){logfee=30+(2*(35)); break;}
                    else if(w>1501 && w<2000){logfee=30+(3*(35)); break;}
                    else if(w>2001 && w<2500){logfee=30+(4*(35)); break;}
                    else if(w>2501 && w<3000){logfee=30+(5*(35)); break;}
                    else if(w>3001 && w<3500){logfee=30+(6*(35)); break;}
                    else if(w>3501 && w<4000){logfee=30+(7*(35)); break;}
                    else if(w>4001 && w<4500){logfee=30+(8*(35)); break;}
                    else if(w>4501 && w<5000){logfee=30+(9*(35)); break;}
                    else if(w<5001){cout<<"Contact Customer Care!!";
                                    cout<<"Press 1 to Continue or Press 2 to Try Again Later";
                                cin>>choice1;
                                    if(choice1==1){logfee=0; break;}
                                    else if(choice1==2){exit(0);}else {cerr<<"Wrong Choice!!"; exit(0)};
                                    }
                    else {cerr<<"Wrong Choice!!"; exit(0)};
                    }
                else if(city==2)
                        {if (w<500){logfee=50;}
                    else if(w>501 && w<1000){logfee=50+(1*(55)); break;}
                    else if(w>1001 && w<1500){logfee=50+(2*(55)); break;}
                    else if(w>1501 && w<2000){logfee=50+(3*(55)); break;}
                    else if(w>2001 && w<2500){logfee=50+(4*(55)); break;}
                    else if(w>2501 && w<3000){logfee=50+(5*(55)); break;}
                    else if(w>3001 && w<3500){logfee=50+(6*(55)); break;}
                    else if(w>3501 && w<4000){logfee=50+(7*(55)); break;}
                    else if(w>4001 && w<4500){logfee=50+(8*(55)); break;}
                    else if(w>4501 && w<5000){logfee=50+(9*(55)); break;}
                    else if(w<5001){cout<<"Contact Customer Care!!";
                                    cout<<"Press 1 to Continue or Press 2 to Try Again Later";
                                cin>>choice1;
                                    if(choice1==1){logfee=0; break;}
                                    else if(choice1==2){exit(0);}else {cerr<<"Wrong Choice!!"; exit(0);}
                                    }
                    else {cerr<<"Wrong Choice!!"; exit(0)};
                    }
                    switch(cod)
                    {case 1: logfee+=; break;
                    case 2: logfee+=0; break;
                    default: cerr<<"Wrong Choice!!"; exit(0);}


                else cerr<<"Wrong Choice!!"; exit(0);
                break;

        case 2: if(city==1)
                {if (w<500){logfee=36;}
                    else if(w>501 && w<1000){logfee=36+(1*(40)); break;}
                    else if(w>1001 && w<1500){logfee=36+(2*(40)); break;}
                    else if(w>1501 && w<2000){logfee=36+(3*(40)); break;}
                    else if(w>2001 && w<2500){logfee=36+(4*(40)); break;}
                    else if(w>2501 && w<3000){logfee=36+(5*(40)); break;}
                    else if(w>3001 && w<3500){logfee=36+(6*(40)); break;}
                    else if(w>3501 && w<4000){logfee=36+(7*(40)); break;}
                    else if(w>4001 && w<4500){logfee=36+(8*(40)); break;}
                    else if(w>4501 && w<5000){logfee=36+(9*(40)); break;}
                    else if(w<5001){cout<<"Contact Customer Care!!";
                                    cout<<"Press 1 to Continue or Press 2 to Try Again Later";
                                cin>>choice1;
                                    if(choice1==1){logfee=0; break;}
                                    else if(choice1==2){exit(0);}else {cerr<<"Wrong Choice!!"; exit(0)};
                                    }
                    else {cerr<<"Wrong Choice!!"; exit(0)};
                    }
                else if(city==2)
                        {if (w<500){logfee=56;}
                    else if(w>501 && w<1000){logfee=56+(1*(40)); break;}
                    else if(w>1001 && w<1500){logfee=56+(2*(40)); break;}
                    else if(w>1501 && w<2000){logfee=56+(3*(40)); break;}
                    else if(w>2001 && w<2500){logfee=56+(4*(40)); break;}
                    else if(w>2501 && w<3000){logfee=56+(5*(40)); break;}
                    else if(w>3001 && w<3500){logfee=56+(6*(40)); break;}
                    else if(w>3501 && w<4000){logfee=56+(7*(40)); break;}
                    else if(w>4001 && w<4500){logfee=56+(8*(40)); break;}
                    else if(w>4501 && w<5000){logfee=56+(9*(40)); break;}
                    else if(w<5001){cout<<"Contact Customer Care!!";
                                    cout<<"Press 1 to Continue or Press 2 to Try Again Later";
                                cin>>choice1;
                                    if(choice1==1){logfee=0; break;}
                                    else if(choice1==2){exit(0);}else {cerr<<"Wrong Choice!!"; exit(0);}
                                    }
                    else {cerr<<"Wrong Choice!!"; exit(0)};
                    }
                    switch(cod){
                    case 1: cout<<"Not Available!!";
                                    cout<<"Press 1 to Continue as NON COD or Press 2 to Try Again Later";
                                cin>>choice2;
                                    if(choice2==1){break;}
                                    else if(choice1==2){exit(0);}else {cerr<<"Wrong Choice!!"; exit(0);}
                    case 2: logfee+=0; break;
                    default: cerr<<"Wrong Choice!!"; exit(0);}


                else cerr<<"Wrong Choice!!"; exit(0);

        case 3: if(city==1)
                {if (w<500){logfee=45;}
                    else if(w>501 && w<1000){logfee=45+(1*(47)); break;}
                    else if(w>1001 && w<1500){logfee=45+(2*(47)); break;}
                    else if(w>1501 && w<2000){logfee=45+(3*(47)); break;}
                    else if(w>2001 && w<2500){logfee=45+(4*(47)); break;}
                    else if(w>2501 && w<3000){logfee=45+(5*(47)); break;}
                    else if(w>3001 && w<3500){logfee=45+(6*(47)); break;}
                    else if(w>3501 && w<4000){logfee=45+(7*(47)); break;}
                    else if(w>4001 && w<4500){logfee=45+(8*(47)); break;}
                    else if(w>4501 && w<5000){logfee=45+(9*(47)); break;}
                    else if(w<5001){cout<<"Contact Customer Care!!";
                                    cout<<"Press 1 to Continue or Press 2 to Try Again Later";
                                cin>>choice1;
                                    if(choice1==1){logfee=0; break;}
                                    else if(choice1==2){exit(0);}else {cerr<<"Wrong Choice!!"; exit(0)};
                                    }
                    else {cerr<<"Wrong Choice!!"; exit(0)};
                    }
                else if(city==2)
                        {if (w<500){logfee=65;}
                    else if(w>501 && w<1000){logfee=65+(1*(56)); break;}
                    else if(w>1001 && w<1500){logfee=65+(2*(56)); break;}
                    else if(w>1501 && w<2000){logfee=65+(3*(56)); break;}
                    else if(w>2001 && w<2500){logfee=65+(4*(56)); break;}
                    else if(w>2501 && w<3000){logfee=65+(5*(56)); break;}
                    else if(w>3001 && w<3500){logfee=65+(6*(56)); break;}
                    else if(w>3501 && w<4000){logfee=65+(7*(56)); break;}
                    else if(w>4001 && w<4500){logfee=65+(8*(56)); break;}
                    else if(w>4501 && w<5000){logfee=65+(9*(56)); break;}
                    else if(w<5001){cout<<"Contact Customer Care!!";
                                    cout<<"Press 1 to Continue or Press 2 to Try Again Later";
                                cin>>choice1;
                                    if(choice1==1){logfee=0; break;}
                                    else if(choice1==2){exit(0);}else {cerr<<"Wrong Choice!!"; exit(0);}
                                    }
                    else {cerr<<"Wrong Choice!!"; exit(0)};
                    }
                    switch(cod)
                    {case 1: logfee+=30; break;
                    case 2: logfee+=0; break;
                    default: cerr<<"Wrong Choice!!"; exit(0);}


                else cerr<<"Wrong Choice!!"; exit(0);

        case 4: if(city==1)
                {if (w<500){logfee=25;}
                    else if(w>501 && w<1000){logfee=25+(1*(28)); break;}
                    else if(w>1001 && w<1500){logfee=25+(2*(28)); break;}
                    else if(w>1501 && w<2000){logfee=25+(3*(28)); break;}
                    else if(w>2001 && w<2500){logfee=25+(4*(28)); break;}
                    else if(w>2501 && w<3000){logfee=25+(5*(28)); break;}
                    else if(w>3001 && w<3500){logfee=25+(6*(28)); break;}
                    else if(w>3501 && w<4000){logfee=25+(7*(28)); break;}
                    else if(w>4001 && w<4500){logfee=25+(8*(28)); break;}
                    else if(w>4501 && w<5000){logfee=25+(9*(28)); break;}
                    else if(w<5001){cout<<"Contact Customer Care!!";
                                    cout<<"Press 1 to Continue or Press 2 to Try Again Later";
                                cin>>choice1;
                                    if(choice1==1){logfee=0; break;}
                                    else if(choice1==2){exit(0);}else {cerr<<"Wrong Choice!!"; exit(0)};
                                    }
                    else {cerr<<"Wrong Choice!!"; exit(0)};
                    }
                else if(city==2)
                        {if (w<500){logfee=45;}
                    else if(w>501 && w<1000){logfee=45+(1*(48)); break;}
                    else if(w>1001 && w<1500){logfee=45+(2*(48)); break;}
                    else if(w>1501 && w<2000){logfee=45+(3*(48)); break;}
                    else if(w>2001 && w<2500){logfee=45+(4*(48)); break;}
                    else if(w>2501 && w<3000){logfee=45+(5*(48)); break;}
                    else if(w>3001 && w<3500){logfee=45+(6*(48)); break;}
                    else if(w>3501 && w<4000){logfee=45+(7*(48)); break;}
                    else if(w>4001 && w<4500){logfee=45+(8*(48)); break;}
                    else if(w>4501 && w<5000){logfee=45+(9*(48)); break;}
                    else if(w<5001){cout<<"Contact Customer Care!!";
                                    cout<<"Press 1 to Continue or Press 2 to Try Again Later";
                                    cin>>choice1;
                                    if(choice1==1){logfee=0; break;}
                                    else if(choice1==2){exit(0);}else {cerr<<"Wrong Choice!!"; exit(0);}
                                    }
                    else {cerr<<"Wrong Choice!!"; exit(0)};
                    }
                    switch(cod){
                    case 1: logfee+=30; break;
                    case 2: logfee+=0; break;
                    default: cerr<<"Wrong Choice!!"; exit(0);}


                else cerr<<"Wrong Choice!!"; exit(0);

        case 5: if(city==1)
                {if (w<500){logfee=55;}
                    else if(w>501 && w<1000){logfee=55+(1*(40)); break;}
                    else if(w>1001 && w<1500){logfee=55+(2*(40)); break;}
                    else if(w>1501 && w<2000){logfee=55+(3*(40)); break;}
                    else if(w>2001 && w<2500){logfee=55+(4*(40)); break;}
                    else if(w>2501 && w<3000){logfee=55+(5*(40)); break;}
                    else if(w>3001 && w<3500){logfee=55+(6*(40)); break;}
                    else if(w>3501 && w<4000){logfee=55+(7*(40)); break;}
                    else if(w>4001 && w<4500){logfee=55+(8*(40)); break;}
                    else if(w>4501 && w<5000){logfee=55+(9*(40)); break;}
                    else if(w<5001){cout<<"Contact Customer Care!!";
                                    cout<<"Press 1 to Continue or Press 2 to Try Again Later";
                                    cin>>choice1;
                                    if(choice1==1){logfee=0; break;}
                                    else if(choice1==2){exit(0);}else {cerr<<"Wrong Choice!!"; exit(0)};
                                    }
                    else {cerr<<"Wrong Choice!!"; exit(0)};
                    }   
                else if(city==2)
                        {if (w<500){logfee=75;}
                    else if(w>501 && w<1000){logfee=75+(1*(60)); break;}
                    else if(w>1001 && w<1500){logfee=75+(2*(60)); break;}
                    else if(w>1501 && w<2000){logfee=75+(3*(60)); break;}
                    else if(w>2001 && w<2500){logfee=75+(4*(60)); break;}
                    else if(w>2501 && w<3000){logfee=75+(5*(60)); break;}
                    else if(w>3001 && w<3500){logfee=75+(6*(60)); break;}
                    else if(w>3501 && w<4000){logfee=75+(7*(60)); break;}
                    else if(w>4001 && w<4500){logfee=75+(8*(60)); break;}
                    else if(w>4501 && w<5000){logfee=75+(9*(60)); break;}
                    else if(w<5001){cout<<"Contact Customer Care!!";
                                    cout<<"Press 1 to Continue or Press 2 to Try Again Later";
                                cin>>choice1;
                                    if(choice1==1){logfee=0; break;}
                                    else if(choice1==2){exit(0);}else {cerr<<"Wrong Choice!!"; exit(0);}
                                    }
                    else {cerr<<"Wrong Choice!!"; exit(0)};
                    }
                    switch(cod){
                    case 1: cout<<"Not Available!!";
                                    cout<<"Press 1 to Continue as NON COD or Press 2 to Try Again Later";
                                cin>>choice2;
                                    if(choice2==1){break;}
                                    else if(choice1==2){exit(0);}else {cerr<<"Wrong Choice!!"; exit(0);}
                    case 2: logfee+=0; break;
                    default: cerr<<"Wrong Choice!!"; exit(0);}


                else cerr<<"Wrong Choice!!"; exit(0);

        case 6: if(city==1)
                    {if (w<500){logfee=30;}
                    else if(w>501 && w<1000){logfee=30+(1*(35)); break;}
                    else if(w>1001 && w<1500){logfee=30+(2*(35)); break;}
                    else if(w>1501 && w<2000){logfee=30+(3*(35)); break;}
                    else if(w>2001 && w<2500){logfee=30+(4*(35)); break;}
                    else if(w>2501 && w<3000){logfee=30+(5*(35)); break;}
                    else if(w>3001 && w<3500){logfee=30+(6*(35)); break;}
                    else if(w>3501 && w<4000){logfee=30+(7*(35)); break;}
                    else if(w>4001 && w<4500){logfee=30+(8*(35)); break;}
                    else if(w>4501 && w<5000){logfee=30+(9*(35)); break;}
                    else if(w<5001){cout<<"Contact Customer Care!!";
                                    cout<<"Press 1 to Continue or Press 2 to Try Again Later";
                                cin>>choice1;
                                    if(choice1==1){logfee=0; break;}
                                    else if(choice1==2){exit(0);}else {cerr<<"Wrong Choice!!"; exit(0)};
                                    }
                    else {cerr<<"Wrong Choice!!"; exit(0)};
                    }
                else if(city==2)
                        {if (w<500){logfee=50;}
                    else if(w>501 && w<1000){logfee=50+(1*(55)); break;}
                    else if(w>1001 && w<1500){logfee=50+(2*(55)); break;}
                    else if(w>1501 && w<2000){logfee=50+(3*(55)); break;}
                    else if(w>2001 && w<2500){logfee=50+(4*(55)); break;}
                    else if(w>2501 && w<3000){logfee=50+(5*(55)); break;}
                    else if(w>3001 && w<3500){logfee=50+(6*(55)); break;}
                    else if(w>3501 && w<4000){logfee=50+(7*(55)); break;}
                    else if(w>4001 && w<4500){logfee=50+(8*(55)); break;}
                    else if(w>4501 && w<5000){logfee=50+(9*(55)); break;}
                    else if(w<5001){cout<<"Contact Customer Care!!";
                                    cout<<"Press 1 to Continue or Press 2 to Try Again Later";
                                cin>>choice1;
                                    if(choice1==1){logfee=0; break;}
                                    else if(choice1==2){exit(0);}else {cerr<<"Wrong Choice!!"; exit(0);}
                                    }
                    else {cerr<<"Wrong Choice!!"; exit(0)};
                    }
                    switch(cod)
                    {case 1: logfee+=0; break;
                    case 2: logfee+=0; break;
                    default: cerr<<"Wrong Choice!!"; exit(0);}


                else cerr<<"Wrong Choice!!"; exit(0);

        case 7: if(city==1)
                    {if (w<500){logfee=40;}
                    else if(w>501 && w<1000){logfee=40+(1*(30));}
                    else if(w>1001 && w<1500){logfee=40+(2*(30));}
                    else if(w>1501 && w<2000){logfee=40+(3*(30));}
                    else if(w>2001 && w<2500){logfee=40+(4*(30));}
                    else if(w>2501 && w<3000){logfee=40+(5*(30));}
                    else if(w>3001 && w<3500){logfee=40+(6*(30));}
                    else if(w>3501 && w<4000){logfee=40+(7*(30));}
                    else if(w>4001 && w<4500){logfee=40+(8*(30));}
                    else if(w>4501 && w<5000){logfee=40+(9*(30));}
                    else if(w<5001){cout<<"Contact Customer Care!!";
                                    cout<<"Press 1 to Continue or Press 2 to Try Again Later";
                                    cin>>choice1;
                                    if(choice1==1){logfee=0; break;}
                                    else if(choice1==2){exit(0);}else {cerr<<"Wrong Choice!!"; exit(0)};
                                    }
                    else {cerr<<"Wrong Choice!!"; exit(0)};
                    }
                else if(city==2)
                        {if (w<500){logfee=60;}
                    else if(w>501 && w<1000){logfee=60+(1*(50));}
                    else if(w>1001 && w<1500){logfee=60+(2*(50));}
                    else if(w>1501 && w<2000){logfee=60+(3*(50));}
                    else if(w>2001 && w<2500){logfee=60+(4*(50));}
                    else if(w>2501 && w<3000){logfee=60+(5*(50));}
                    else if(w>3001 && w<3500){logfee=60+(6*(50));}
                    else if(w>3501 && w<4000){logfee=60+(7*(50));}
                    else if(w>4001 && w<4500){logfee=60+(8*(50));}
                    else if(w>4501 && w<5000){logfee=60+(9*(50));}
                    else if(w<5001){cout<<"Contact Customer Care!!";
                                    cout<<"Press 1 to Continue or Press 2 to Try Again Later";
                                cin>>choice1;
                                    if(choice1==1){logfee=0; break;}
                                    else if(choice1==2){exit(0);}else {cerr<<"Wrong Choice!!"; exit(0);}
                                    }
                    else {cerr<<"Wrong Choice!!"; exit(0)};
                    }
                    switch(cod)
                    {case 1: logfee+=0; break;
                    case 2: logfee+=0; break;
                    default: cerr<<"Wrong Choice!!"; exit(0);}


                else cerr<<"Wrong Choice!!"; exit(0);
        case 8: if(city==1)
                {if (w<500){logfee=45;}
                    else if(w>501 && w<1000){logfee=45+(9*(40)); break;}
                    else if(w>1001 && w<1500){logfee=45+(2*(40)); break;}
                    else if(w>1501 && w<2000){logfee=45+(3*(40)); break;}
                    else if(w>2001 && w<2500){logfee=45+(4*(40)); break;}
                    else if(w>2501 && w<3000){logfee=45+(5*(40)); break;}
                    else if(w>3001 && w<3500){logfee=45+(6*(40)); break;}
                    else if(w>3501 && w<4000){logfee=45+(7*(40)); break;}
                    else if(w>4001 && w<4500){logfee=45+(8*(40)); break;}
                    else if(w>4501 && w<5000){logfee=45+(9*(40)); break;}
                    else if(w<5001){cout<<"Contact Customer Care!!";
                                    cout<<"Press 1 to Continue or Press 2 to Try Again Later";
                                cin>>choice1;
                                    if(choice1==1){logfee=0; break;}
                                    else if(choice1==2){exit(0);}else {cerr<<"Wrong Choice!!"; exit(0)};
                                    }
                    else {cerr<<"Wrong Choice!!"; exit(0)};
                    }
                else if(city==2)
                        {if (w<500){logfee=65;}
                    else if(w>501 && w<1000){logfee=65+(1*(60)); break;}
                    else if(w>1001 && w<1500){logfee=65+(2*(60)); break;}
                    else if(w>1501 && w<2000){logfee=65+(3*(60)); break;}
                    else if(w>2001 && w<2500){logfee=65+(4*(60)); break;}
                    else if(w>2501 && w<3000){logfee=65+(5*(60)); break;}
                    else if(w>3001 && w<3500){logfee=65+(6*(60))}
                    else if(w>3501 && w<4000){logfee=65+(7*(60)); break;}
                    else if(w>4001 && w<4500){logfee=65+(8*(60)); break;}
                    else if(w>4501 && w<5000){logfee=65+(9*(60)); break;}
                    else if(w<5001){cout<<"Contact Customer Care!!";
                                    cout<<"Press 1 to Continue or Press 2 to Try Again Later";
                                cin>>choice1;
                                    if(choice1==1){logfee=0; break;}
                                    else if(choice1==2){exit(0);}else {cerr<<"Wrong Choice!!"; exit(0);}
                                    }
                    else {cerr<<"Wrong Choice!!"; exit(0)};
                    }
                    switch(cod)
                    {case 1: logfee+=20; break;
                    case 2: logfee+=0; break;
                    default: cerr<<"Wrong Choice!!"; exit(0);}


                else cerr<<"Wrong Choice!!"; exit(0);

        case 9: if(city==1)
                {if (w<500){logfee=47;}
                    else if(w>501 && w<1000){logfee=47+(1*(50));}
                    else if(w>1001 && w<1500){logfee=47+(2*(50));}
                    else if(w>1501 && w<2000){logfee=47+(3*(50));}
                    else if(w>2001 && w<2500){logfee=47+(4*(50));}
                    else if(w>2501 && w<3000){logfee=47+(5*(50));}
                    else if(w>3001 && w<3500){logfee=47+(6*(50));}
                    else if(w>3501 && w<4000){logfee=47+(7*(50));}
                    else if(w>4001 && w<4500){logfee=47+(8*(50));}
                    else if(w>4501 && w<5000){logfee=47+(9*(50));}
                    else if(w<5001){cout<<"Contact Customer Care!!";
                                    cout<<"Press 1 to Continue or Press 2 to Try Again Later";
                                cin>>choice1;
                                    if(choice1==1){logfee=0; break;}
                                    else if(choice1==2){exit(0);}else {cerr<<"Wrong Choice!!"; exit(0)};
                                    }
                    else {cerr<<"Wrong Choice!!"; exit(0)};
                    }
                else if(city==2)
                        {if (w<500){logfee=65;}
                    else if(w>501 && w<1000){logfee=65+(1*(70));}
                    else if(w>1001 && w<1500){logfee=65+(2*(70));}
                    else if(w>1501 && w<2000){logfee=65+(3*(70));}
                    else if(w>2001 && w<2500){logfee=65+(4*(70));}
                    else if(w>2501 && w<3000){logfee=65+(5*(70));}
                    else if(w>3001 && w<3500){logfee=65+(6*(70));}
                    else if(w>3501 && w<4000){logfee=65+(7*(70));}
                    else if(w>4001 && w<4500){logfee=65+(8*(70));}
                    else if(w>4501 && w<5000){logfee=65+(9*(70));}
                    else if(w<5001){cout<<"Contact Customer Care!!";
                                    cout<<"Press 1 to Continue or Press 2 to Try Again Later";
                                cin>>choice1;
                                    if(choice1==1){logfee=0; break;}
                                    else if(choice1==2){exit(0);}else {cerr<<"Wrong Choice!!"; exit(0);}
                                    }
                    else {cerr<<"Wrong Choice!!"; exit(0)};
                    }
                    switch(cod){
                    {case 1: logfee+=; break;
                    case 2: logfee+=0; break;
                    default: cerr<<"Wrong Choice!!"; exit(0);}


                else cerr<<"Wrong Choice!!"; exit(0);

    default : cerr<<"Wrong Choice!!"; exit(0);}
    }

    l=logfee;
    return l;
    }
int restfee(int wb)
    {
    switch(wb)
    { case 1: trfee=(1/sp)*100;
              mkpfee=(15/sp)*100;
                break;

      case 2: trfee=(3.2/sp)*100;
              mkpfee=(15/sp)*100;
                break;

      case 3: trfee=(1/sp)*100;
          mkpfee=(8/sp)*100;
            break;

      case 4: trfee=(3/sp)*100;
        mkpfee=(14/sp)*100;
            break;

      case 5: trfee=(4.5/sp)*100;
              mkpfee=5;
            break;
      case 6: trfee=0;
              mkpfee=(15/sp)*100;
            break;
        default : cerr<<"Wrong Choice!!";
        exit(0);

        }

        a=trfee;
        b=mkpfee;
        return a,b;
    }


    int pkf(int city,int w,int cod,int log)
    { w=logistics(city,w,cod,log);
    if(w<1000){pkfee=20;}
    else
    if(w>1000){pkfee=40;} else {exit(0);}
    x=pkfee;
    return x;
    }


    //x=pkf();
    //y=logistics();
    //z=fvfee();



    float calculator(float sp)
    {
    float tax,texp,total;

    exp=x+trfee+z+mkpfee+y;
    tax=(14.5/sp)*100;
    texp=exp+tax;
    total=sp-texp;
    total=t;
    return t;
    }



};

    //strcpy(i,categname(category));
    //strcpy(j,wbname(wb));
    //strcpy(k,categname(log));


char categdisplay(int category)
    {char categname[40];
    switch(category)
    {case 1:strcpy(categname,"Baby & Mom");
            break;
    case 2:strcpy(categname,"Books & Magazines");
            break;
    case 3:strcpy(categname,"Cameras & Optics");
            break;
    case 4:strcpy(categname,"Automotive");
            break;
    case 5:strcpy(categname,"Charity");
            break;
    case 6:strcpy(categname,"Clothing & Accessories");
            break;
    case 7:strcpy(categname,"Coins & Notes");
            break;
    case 8:strcpy(categname,"Collectibles");
            break;
    case 9:strcpy(categname,"Fitness & Sports");
            break;
    case 10:strcpy(categname,"Fragrances, Beauty & Health");
            break;
    case 11:strcpy(categname,"Fun Stuff");
            break;
    case 12:strcpy(categname,"Games & Accessories");
            break;
    case 13:strcpy(categname,"Home and Living");
            break;
    case 14:strcpy(categname,"Home & Kitchen Appliances");
            break;
    case 15:strcpy(categname,"Jewellery & Precious Coins");
            break;
    case 16:strcpy(categname,"Kitchen & Dining");
            break;
    case 17:strcpy(categname,"Laptops & Computer Peripherals");
            break;
    case 18:strcpy(categname,"LCD, LED & Televisions");
            break;
    case 19:strcpy(categname,"Memory Cards, Pen Drives & HDD");
            break;
    case 20:strcpy(categname,"Mobile Accessories");
            break;
    case 21:strcpy(categname,"Mobile Phones");
            break;
    case 22:strcpy(categname,"Gaming Consoles");
            break;
    case 23:strcpy(categname,"Movies & Music");
            break;
    case 24:strcpy(categname,"Musical Instruments");
            break;
    case 25:strcpy(categname,"Services & Real Estate");
            break;
    case 26:strcpy(categname,"Shoes");
            break;
    case 27:strcpy(categname,"Stamps");
            break;
    case 28:strcpy(categname,"Stationery & Office Supplies");
            break;
    case 29:strcpy(categname,"Tablets & Accessories");
            break;
    case 30:strcpy(categname,"Hardware & Electricals");
            break;
    case 31:strcpy(categname,"Toys, Games & School Supplies");
            break;
    case 32:strcpy(categname,"Travel");
            break;
    case 33:strcpy(categname,"Watches");
            break;
    case 34:strcpy(categname,"Warranty Services");
            break;
    case 35:strcpy(categname,"Wearable Devices");
            break;
    case 36:strcpy(categname,"Audio & Home Entertainment");
            break;
    case 37:strcpy(categname,"Everything Else");
            break;
    default:cerr<<"Wrong Choice!!"; exit(0);}
    return categname;
    }
char wbdisplay(int wb)
    {char wbname[40];
    switch(wb)
    {case 1:strcpy(wbname,"Flipkart");
            break;
    case 2:strcpy(wbname,"Amazon");
            break;
    case 3:strcpy(wbname,"SnapDeal");
            break;
    case 4: strcpy(wbname,"PayTM");
            break;
    case 5: strcpy(wbname,"eBay");
            break;
    case 6: strcpy(wbname,"ShopClues");
            break;
    default:cerr<<"Wrong Choice!!"; exit(0);}
    return wbname;
    }


char logdisplay(int log)
    {char logname[40];
    switch(log)
    {case 1:strcpy(logname,"BlueDart");
            break;
    case 2:strcpy(logname,"FedEx");
            break;
    case 3:strcpy(logname,"Delhivery");
            break;
    case 4: strcpy(logname,"DTDC/FirstFlight");
            break;
    case 5: strcpy(logname,"Ecom Express");
            break;
    case 6: strcpy(logname,"India Post");
            break;
    case 7: strcpy(logname,"ATS");
            break;
    case 8: strcpy(logname,"Ekart");
                break;
    case 9: strcpy(logname,"Aramex");
            break;
    default: cerr<<"Wrong Choice!!"; exit(0);}
    return logname;
    }

void display(int w)
    { Expenditures ep;
        cout<<"Category - "<<i;
         puts(i);
    cout<<endl<<"Website -"; puts(j);
    cout<<endl<<"Courier Company(Logistics) - "; puts(k);
    cout<<endl<<"weight"<<w;
    cout<<endl<<"MarketPlace Fee - "<<ep.a;
    cout<<endl<<"Transaction Fee - "<<ep.b;
    cout<<endl<<"Final value Fee(Based on Category) Fee - "<<ep.z;
    cout <<endl<<"Logistics Fee - "<<ep.y;
    cout<<endl<<"Packaging Fee - "<<ep.x<<endl;

    cout<<"The Total In Hand Amount after 14.5 % Tax is - "<<ep.t<<endl;
    int f;
    cout<<"Do You Want to Save the information in a file?  (Yes=>1 OR No=>2 ) - ";
    cin>>f;
    if(f==1)
    { ofstream sell;
    sell.open("Seller.txt");

    ////////////////////////////////////////////////////////////////////////////////////////////////////////////
    sell<<"Category - "<<puts(i);
    sell<<endl<<"Website -"<<puts(j);
    sell<<endl<<"Courier Company(Logistics) - "<<puts(k);
    sell<<endl<<"weight"<<w;
    sell<<endl<<"MarketPlace Fee - "<<ep.a;
    sell<<endl<<"Transaction Fee - "<<ep.b;
    sell<<endl<<"Final value Fee(Based on Category) Fee - "<<ep.z;
    sell <<endl<<"Logistics Fee - "<<ep.y;
    sell<<endl<<"Packaging Fee - "<<ep.x<<endl;

    sell<<"The Total In Hand Amount after 14.5 % Tax is - "<<ep.t<<endl; sell.close();}
    ////////////////////////////////////////////////////////////////////////////////////////////////////////////
    else exit(0);


    }



int main()
{ float w,l,b,h;
int cod,city,log,category,wb,sp;

Expenditures ex;
cout<<"Enter the category number corresponding to its serial number"<<endl<<"1. Baby & Mom"<<endl<<"2. Books & Magazines"<<endl<<"3. Cameras & Optics"<<endl<<"4. Automotive"<<endl<<"5. Charity"<<endl<<
    "6. Clothing & Accessories"<<endl<<"7. Coins & Notes"<<endl<<"8. Collectibles"<<endl<<"9. Fitness & Sports"<<endl<<"10. Fragrances, Beauty & Health"<<endl;
    cout<<"11. Fun Stuff"<<endl<<"12. Games & Accessories"<<endl<<"13. Home and Living"<<endl<<"14. Home & Kitchen Appliances"<<endl<<"15. Jewellery & Precious Coins"<<endl<<"16. Kitchen & Dining"<<endl<<"17. Laptops & Computer Peripherals"<<endl<<"18. LCD, LED & Televisions"<<endl<<"19. Memory Cards, Pen Drives & HDD"<<endl;
    cout<<"20. Mobile Accessories"<<endl<<"21. Mobile Phones"<<endl<<"22. Gaming Consoles"<<endl<<"23. Movies & Music"<<endl<<"24. Musical Instruments"<<endl<<"25. Services & Real Estate"<<endl<<"26. Shoes"<<endl<<"27. Stamps"<<endl<<"28. Stationery & Office Supplies"<<endl<<"29. Tablets & Accessories"<<endl;
    cout<<"30. Hardware & Electricals"<<endl<<"31. Toys, Games & School Supplies"<<endl<<"32. Travel"<<endl<<"33. Watches"<<endl<<"34. Warranty Services"<<endl<<"35. Wearable Devices"<<endl<<"36. Audio & Home Entertainment"<<endl<<"37. Everything Else"<<endl;

    cin>>category;


cout<<"Enter the Number corresponding to the Name of the Website the prouduct is sold on -"<<endl<<"1. Flipkart"<<endl<<"2. SnapDeal"<<endl<<"3. Amazon"<<endl<<"4. PayTM"<<endl<<"5. eBay"<<endl<<"6. ShopClues"<<endl;
cin>>wb;



cout<<"What is the Selling Price Inclusive of all discounts and shipping charges? - ";
cin>>sp;

cout<<"What is the Length, Breadth & Height of the Package (in Cms)?- "<<endl;
cin>>l>>b>>h;
w=(l*b*h)/5;

cout<<"Press 1 for COD orders or Press 2 for Non COD orders - "<<endl;
cin>>cod;
cout<<"Press 1 for Shipments within the City or Press 2 for Shipments Outside the City - ";
cin>>city;
cout<<"Which Logistics is Used for the Shipment - "<<endl<<"1. BlueDart"<<endl<<"2. FedEx"<<endl<<"3. Delhivery"<<endl<<"4. DTDC/FirstFlight"<<endl<< "5. Ecom Express";
cout<<endl<<"6. India Post"<<endl<< "7. ATS"<<endl<< "8. Ekart"<<endl<<"9. Aramex";
cin>>log;
i=categdisplay(category);
j=wbdisplay(wb);
k=logdisplay(log);
//  strcpy(i,categdisplay(category));
//  strcpy(j,wbdisplay(wb));
//  strcpy(k,logdisplay(log));
ex.pkf(city,w,cod,log);
ex.logistics(city,w,cod,log);
ex.finalvfee(wb,category);
ex.restfee(wb);
ex.calculator(sp);
//ex.categdisplay(category);
//ex.wbdisplay(wb);
//ex.logdisplay(log);
display(wb);

cout<<" Note: Above calculations are not 100% accurate. These are approximate figures only and may vary based on exact product weight and packaging dimensions.";
return 0;
}

2 things to start with:

  • In the Expenditures class your functions are using a variable(sp) that isn't defined anywhere in the functions or the class.
  • You use this statement alot: else {cerr<<"Wrong Choice!!"; exit(0)};. The semi-colon goes inside the bracket:

    else 
    {
        cerr<<"Wrong Choice!!"; 
        exit(0);
    }
    

Notice how expanding the block to multi-line format makes it much easier to see the right syntax.

On a side note having a series of string arrays will eliminate all those switch blocks. For instance:

char wbdisplay(int wb)
    {char wbname[40];
    switch(wb)
    {case 1:strcpy(wbname,"Flipkart");
            break;
    case 2:strcpy(wbname,"Amazon");
            break;
    case 3:strcpy(wbname,"SnapDeal");
            break;
    case 4: strcpy(wbname,"PayTM");
            break;
    case 5: strcpy(wbname,"eBay");
            break;
    case 6: strcpy(wbname,"ShopClues");
            break;
    default:cerr<<"Wrong Choice!!"; exit(0);}
    return wbname;
    }

becomes:

string wbdisplay(int wb)
{

    if(wb < 1 || wb > 6)
    {
        cerr<<"Wrong Choice!!"; 
        exit(0);
    }
    string wbNames[6] = {"Flipkart","Amazon","SnapDeal","PayTM","eBay","ShopClues"};
    return wbNames[wb - 1];
}

Also since you're using using c++ already it makes sense to use strings instead of character arrays.

commented: Thank You Sir! +0

Also use classes where your constructor or setter methods can set internal variables that can be accessed with a simple getter method. Add to that @tinstaafl's suggestion about array's of strings, you can do something like obj.wbdisplay(); where the wb value is stored in the object when it is constructed. Also, wbdisplay(int) should return a string and not a char just as tinstaafl showed. It would be much more efficient, and do just what you want.

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