I have a file of name PROFILES.DAT in which several records
are stored. I want to create some new fields in those records so I made a new program to read the file, store records in a structure, copy the structure elements into a new structure and finally write the new structure to a file PROFILES2.DAT. The program does not reach the first while loop at line 60. Can anyone help me out? I have added the source code of the other program I used to edit the file PROFILES.DAT.
#include<iostream.h>
#include<conio.h>
#include<stdio.h>
#include<stdlib.h>
#include<string.h>
long int recsize,recsize2;
struct profile
{
char fname[15],lname[15],month[10];
int date,year,grade,roll,admin;
float meng,msst,mmat,msci,mhin,pcent;
}stud;
struct newprofile
{
char fname[15],lname[15],month[10];
int date,year,grade,roll,admin;
float eng1,sst1,mat1,sci1,hin1,pcent1,pcent2,pcenttotal,cgpa1,cgpa2,cgpatotal,hin2,eng2,mat2,sci2,sst2,eng,mat,sci,sst,hin;
}studnew;
FILE *fp,*file;
void main()
{
int y=1;
clrscr();
file=fopen("F:\PROFILES.DAT","rb+");
if(file==NULL)
{
file=fopen("F:\PROFILES.DAT","wb+");
if(file==NULL)
{
puts("CANNOT OPEN THE SOURCE FILE.....!!!!!");
getch();
exit(2);
}
}
else
{
gotoxy(20,10);
cout<<"FILE1 OPENED SUCCESSFULLY";
getch();
}
fp=fopen("F:\PROFILES2.DAT","rb+");
if(fp==NULL)
{
fp=fopen("F:\PROFILES2.DAT","wb+");
if(fp==NULL)
{
puts("CANNOT OPEN THE Target FILE.....!!!!!");
getch();
exit(2);
}
}
else
{
gotoxy(20,10);
cout<<"FILE2 OPENED SUCCESSFULLY";
getch();
}
recsize2=sizeof(studnew);
fseek(fp,0,SEEK_END);
while(y==1)
{
if(fread(&stud,recsize,1,file)!=0)
{
clrscr();
gotoxy(5,2);
cout<<"You are in the record display module. Record number: ";
gotoxy(10,4);
cout<<"Name: ";
printf("%s",stud.fname);
cout<<" ";
printf("%s",stud.lname);
gotoxy(10,6);
cout<<"Class: "<<stud.grade;
gotoxy(10,7);
cout<<"Roll number: "<<stud.roll;
gotoxy(10,8);
cout<<"Scholar number: "<<stud.admin;
gotoxy(10,10);
cout<<"Date of birth: "<<stud.date<<" ";
printf("%s",stud.month);
cout<<","<<stud.year;
gotoxy(10,12);
cout<<"Marks obtained: Hindi: "<<stud.mhin;
gotoxy(26,13);
cout<<"English: "<<stud.meng;
gotoxy(26,14);
cout<<"Maths: "<<stud.mmat;
gotoxy(26,15);
cout<<"Science: "<<stud.msci;
gotoxy(26,16);
cout<<"Social Studies: "<<stud.msst;
gotoxy(10,18);
cout<<"Percentage: "<<stud.pcent<<"%";
getch();
strcpy(studnew.fname,stud.fname);
strcpy(studnew.lname,stud.lname);
strcpy(studnew.month,stud.month);
studnew.grade=stud.grade;
studnew.admin=stud.admin;
studnew.date=stud.date;
studnew.roll=stud.roll;
studnew.year=stud.year;
studnew.eng1=stud.meng;
studnew.mat1=stud.mmat;
studnew.sst1=stud.msst;
studnew.sci1=stud.msci;
studnew.hin1=stud.mhin;
studnew.pcent1=stud.pcent;
studnew.hin=80;
studnew.eng=80;
studnew.sci=80;
studnew.mat=80;
studnew.sst=80;
studnew.cgpa1=((stud.msst*1.25)+(stud.meng*1.25)+(stud.mhin*1.25)+(stud.mmat*1.25)+(stud.msci*1.25))/5;
studnew.hin2=studnew.sci2=studnew.sst2=studnew.mat2=studnew.eng2=studnew.pcent2=studnew.pcenttotal=studnew.cgpa2=studnew.cgpatotal=0;
fseek(fp,0,SEEK_END);
fwrite(&studnew,recsize2,1,fp);
}
else
y=0;
}
}CODE OF OLD FILE
#include<conio.h>
#include<iostream.h>
#include<stdlib.h>
#include<string.h>
#include<stdio.h>
#define UARROW 72
#define DARROW 80
#define ENTER 13
#define ESCAPE 27
int key,q=1,del=1,adminnumber;
char s=219;
FILE *file,*tmp;
long int recsize;
void display(int);
void drawbox(int,int,int,int);
void getkey();
struct profile
{
char fname[15],lname[15],month[10];
int date,year,grade,roll,admin;
float meng,msst,mmat,msci,mhin,pcent;
}stud;
float hin=80.0,eng=80.0,mat=80.0,sci=80.0,sst=80.0;
void fname_search()
{
char name[15];
int w,i=1,match=0;
gotoxy(5,2);
cout<<"You are in the SEARCH BY FIRST NAME module";
gotoxy(10,4);
cout<<"Enter first name: ";
gets(name);
rewind(file);
while(fread(&stud,recsize,1,file)==1)
{
if(strcmp(stud.fname,name)==0)
{
match=1;
clrscr();
gotoxy(5,2);
cout<<"You are in the SEARCH BY FIRST NAME module";
gotoxy(10,4);
cout<<"Name: ";
printf("%s",stud.fname);
cout<<" ";
printf("%s",stud.lname);
gotoxy(10,6);
cout<<"Class: "<<stud.grade;
gotoxy(10,7);
cout<<"Roll number: "<<stud.roll;
gotoxy(10,8);
cout<<"Scholar number: "<<stud.admin;
gotoxy(10,10);
cout<<"Date of birth: "<<stud.date<<" ";
printf("%s",stud.month);
cout<<","<<stud.year;
gotoxy(10,12);
cout<<"Marks obtained: Hindi: "<<stud.mhin;
gotoxy(26,13);
cout<<"English: "<<stud.meng;
gotoxy(26,14);
cout<<"Maths: "<<stud.mmat;
gotoxy(26,15);
cout<<"Science: "<<stud.msci;
gotoxy(26,16);
cout<<"Social Studies: "<<stud.msst;
gotoxy(10,18);
cout<<"Percentage: "<<stud.pcent<<"%";
gotoxy(10,24);
cout<<"Press ENTER to see next result.";
getch();
}
i++;
}
if(match==0)
{
clrscr();
gotoxy(20,10);
cout<<"NO MATCH FOUND";
getch();
}
}
void lname_search()
{
char name[15];
int w,i=1,match=0;
gotoxy(5,2);
cout<<"You are in the SEARCH BY LAST NAME module";
gotoxy(10,4);
cout<<"Enter first name: ";
gets(name);
rewind(file);
while(fread(&stud,recsize,1,file)==1)
{
if(strcmp(stud.lname,name)==0)
{
match=1;
clrscr();
gotoxy(5,2);
cout<<"You are in the SEARCH BY LAST NAME module";
gotoxy(10,4);
cout<<"Name: ";
printf("%s",stud.fname);
cout<<" ";
printf("%s",stud.lname);
gotoxy(10,6);
cout<<"Class: "<<stud.grade;
gotoxy(10,7);
cout<<"Roll number: "<<stud.roll;
gotoxy(10,8);
cout<<"Scholar number: "<<stud.admin;
gotoxy(10,10);
cout<<"Date of birth: "<<stud.date<<" ";
printf("%s",stud.month);
cout<<","<<stud.year;
gotoxy(10,12);
cout<<"Marks obtained: Hindi: "<<stud.mhin;
gotoxy(26,13);
cout<<"English: "<<stud.meng;
gotoxy(26,14);
cout<<"Maths: "<<stud.mmat;
gotoxy(26,15);
cout<<"Science: "<<stud.msci;
gotoxy(26,16);
cout<<"Social Studies: "<<stud.msst;
gotoxy(10,18);
cout<<"Percentage: "<<stud.pcent<<"%";
gotoxy(10,24);
cout<<"Press ENTER to see next result.";
getch();
}
i++;
}
if(match==0)
{
clrscr();
gotoxy(20,10);
cout<<"NO MATCH FOUND";
getch();
}
}
void admin_search()
{
int w,i=1,match=0,number;
gotoxy(5,2);
cout<<"You are in the SEARCH BY SCHOLAR NUMBER module";
gotoxy(10,4);
cout<<"Enter scholar number: ";
cin>>number;
rewind(file);
while(fread(&stud,recsize,1,file)==1)
{
if(stud.admin==number)
{
match=1;
clrscr();
gotoxy(5,2);
cout<<"You are in the SEARCH BY SCHOLAR NUMBER module";
gotoxy(10,4);
cout<<"Name: ";
printf("%s",stud.fname);
cout<<" ";
printf("%s",stud.lname);
gotoxy(10,6);
cout<<"Class: "<<stud.grade;
gotoxy(10,7);
cout<<"Roll number: "<<stud.roll;
gotoxy(10,8);
cout<<"Scholar number: "<<stud.admin;
gotoxy(10,10);
cout<<"Date of birth: "<<stud.date<<" ";
printf("%s",stud.month);
cout<<","<<stud.year;
gotoxy(10,12);
cout<<"Marks obtained: Hindi: "<<stud.mhin;
gotoxy(26,13);
cout<<"English: "<<stud.meng;
gotoxy(26,14);
cout<<"Maths: "<<stud.mmat;
gotoxy(26,15);
cout<<"Science: "<<stud.msci;
gotoxy(26,16);
cout<<"Social Studies: "<<stud.msst;
gotoxy(10,18);
cout<<"Percentage: "<<stud.pcent<<"%";
gotoxy(10,24);
cout<<"Press anykey to go back";
getch();
}
i++;
}
if(match==0)
{
clrscr();
gotoxy(20,10);
cout<<"NO MATCH FOUND";
getch();
}
}
void menu_search(int ch)
{
clrscr();
gotoxy(20,1);
cout<<"Select a criterion by which you want to search\n\n\n\n\n";
cout<<" Search by First Name\n\n";
cout<<" Search by Last Name\n\n";
cout<<" Search by Scholar Number\n\n";
cout<<" Go back\n\n";
gotoxy(10,2*(ch)+4);
cout<<s<<s<<s<<s<<s<<s<<s<<s<<s<<s<<s<<s<<s<<s<<s;
gotoxy(51,2*(ch)+4);
cout<<s<<s<<s<<s<<s<<s<<s<<s<<s<<s<<s<<s<<s<<s<<s;
gotoxy(10,24);
cout<<"Press UP and DOWN ARROWS to navigate. Press ENTER to select";
}
void execute_search(int ch)
{
clrscr();
switch(ch)
{
case 1:
fname_search();
break;
case 2:
lname_search();
break;
case 3:
admin_search();
break;
case 4:
q=0;
break;
}
}
void searchrec()
{
int ctr=1,i=1;
q=1;
while(ctr==1)
{
menu_search(i);
getkey();
switch(key)
{
case UARROW:
i=i-1;
break;
case DARROW:
i=i+1;
break;
case ENTER:
execute_search(i);
break;
}
if(i==0)
i=4;
if(i==5)
i=1;
ctr=q;
}
}
void disprec()
{
int ctr=1,i=1;
clrscr();
while(ctr==1)
{
display(i);
getkey();
switch(key)
{
case UARROW:
i=i-1;
break;
case DARROW:
i=i+1;
break;
case ESCAPE:
ctr=0;
break;
}
if(i==0)
i=1;
}
}
void addrec()
{
fseek(file,0,SEEK_END);
int ctr=0;
while(ctr==0)
{
gotoxy(5,2);
cout<<"You are in the record entry module. Follow the steps to enter the record.";
gotoxy(10,4);
cout<<"Enter first name: ";
gets(stud.fname);
gotoxy(10,5);
cout<<"Enter last name: ";
gets(stud.lname);
gotoxy(10,6);
cout<<"Enter grade: ";
cin>>stud.grade;
gotoxy(10,7);
cout<<"Enter roll number: ";
cin>>stud.roll;
gotoxy(10,8);
cout<<"Enter scholar number: ";
cin>>stud.admin;
gotoxy(10,10);
cout<<"Date of birth: Date: ";
cin>>stud.date;
gotoxy(25,11);
cout<<"Month(type the full name): ";
gets(stud.month);
gotoxy(25,12);
cout<<"Year: ";
cin>>stud.year;
gotoxy(10,14);
cout<<"Marks entry: Hindi: ";
cin>>stud.mhin;
gotoxy(23,15);
cout<<"English: ";
cin>>stud.meng;
gotoxy(23,16);
cout<<"Maths: ";
cin>>stud.mmat;
gotoxy(23,17);
cout<<"Science: ";
cin>>stud.msci;
gotoxy(23,18);
cout<<"Social Studies: ";
cin>>stud.msst;
gotoxy(10,20);
cout<<"Record Has been saved";
getch();
stud.pcent=((stud.mhin+stud.meng+stud.mmat+stud.msci+stud.msst)*100)/(hin+eng+sst+sci+mat);
fwrite(&stud,recsize,1,file);
clrscr();
gotoxy(10,10);
cout<<"Press ENTER to add another record.\n";
gotoxy(10,11);
cout<<"Press ESCAPE to go back.\n";
getkey();
clrscr();
switch(key)
{
case ENTER:
ctr=0;
break;
case ESCAPE:
ctr=1;
}
}
}
void setdefault()
{
clrscr();
gotoxy(5,2);
cout<<"Set maximum marks for the subjects-";
gotoxy(10,4);
cout<<"Hindi: ";
cin>>hin;
gotoxy(10,5);
cout<<"English: ";
cin>>eng;
gotoxy(10,6);
cout<<"Maths: ";
cin>>mat;
gotoxy(10,7);
cout<<"Science: ";
cin>>sci;
gotoxy(10,8);
cout<<"Social Studies: ";
cin>>sst;
gotoxy(10,10);
cout<<"The values for maximum marks have been saved";
getch();
}
void display(int ch)
{
int qwert=0,i;
rewind(file);
for(i=1;i<=ch;i++)
{
if(fread(&stud,recsize,1,file)!=0)
{
clrscr();
gotoxy(5,2);
cout<<"You are in the record display module. Record number: "<<ch;
gotoxy(10,4);
cout<<"Name: ";
printf("%s",stud.fname);
cout<<" ";
printf("%s",stud.lname);
gotoxy(10,6);
cout<<"Class: "<<stud.grade;
gotoxy(10,7);
cout<<"Roll number: "<<stud.roll;
gotoxy(10,8);
cout<<"Scholar number: "<<stud.admin;
gotoxy(10,10);
cout<<"Date of birth: "<<stud.date<<" ";
printf("%s",stud.month);
cout<<","<<stud.year;
gotoxy(10,12);
cout<<"Marks obtained: Hindi: "<<stud.mhin;
gotoxy(26,13);
cout<<"English: "<<stud.meng;
gotoxy(26,14);
cout<<"Maths: "<<stud.mmat;
gotoxy(26,15);
cout<<"Science: "<<stud.msci;
gotoxy(26,16);
cout<<"Social Studies: "<<stud.msst;
gotoxy(10,18);
cout<<"Percentage: "<<stud.pcent<<"%";
gotoxy(10,24);
cout<<"Press UP and DOWN ARROWS to navigate. Press ESCAPE to go back";
qwert=1;
}
else
{
ch=ch-1;
clrscr();
gotoxy(20,10);
cout<<"NO MORE RECORDS FOUND";
gotoxy(10,24);
cout<<"Press UP ARROW to view previous record. Press ESCAPE to go back";
}
}
if(qwert==0)
cout<<"NO RECORDS FOUND";
}
void drawbox(int boxa,int boxb,int boxc,int boxd)
{
int i,j;
char s=205,c=201,q=186,d=187,e=200,f=188;
gotoxy(boxa,boxb);
cout<<c;
gotoxy(boxa,boxd-1);
cout<<e;
gotoxy(boxc-1,boxb);
cout<<d;
gotoxy(boxc-1,boxd-1);
cout<<f;
for(i=boxa+1;i<boxc-1;i++)
{
for(j=boxb;j<boxd;j++)
{
gotoxy(i,j);
cout<<s;
}
}
for(i=boxa;i<boxc;i++)
{
for(j=boxb+1;j<boxd-1;j++)
{
gotoxy(i,j);
cout<<q;
}
}
for(i=boxa+1;i<boxc-1;i++)
{
for(j=boxb+1;j<boxd-1;j++)
{
gotoxy(i,j);
cout<<" ";
}
}
gotoxy(boxa+1,boxb+1);
}
void menu_main(int ch)
{
textcolor(7);
textbackground(0);
int q;
clrscr();
gotoxy(20,1);
cout<<"Welcome to KPercent5.0\n\n\n\n\n";
cout<<" Add Records\n\n";
cout<<" Display Records\n\n";
cout<<" Search Records\n\n";
cout<<" Set Maximum Marks\n\n";
cout<<" Exit\n\n";
gotoxy(10,2*(ch)+4);
cout<<s<<s<<s<<s<<s<<s<<s<<s<<s<<s<<s<<s<<s<<s<<s;
gotoxy(44,2*(ch)+4);
cout<<s<<s<<s<<s<<s<<s<<s<<s<<s<<s<<s<<s<<s<<s<<s;
gotoxy(10,24);
cout<<"Press UP and DOWN ARROWS to navigate. Press ENTER to select";
}
void execute_main(int ch)
{
clrscr();
switch(ch)
{
case 1:
addrec();
break;
case 2:
disprec();
break;
case 3:
searchrec();
break;
case 5:
fclose(file);
exit(1);
case 4:
setdefault();
break;
}
}
void getkey()
{
key=getch();
if(key==0)
key=getch();
}
void main()
{
int i=1;
clrscr();
file=fopen("E:\PROFILES.DAT","rb+");
if(file==NULL)
{
file=fopen("E:\PROFILES.DAT","wb+");
if(file==NULL)
{
puts("CANNOT OPEN THE SOURCE FILE.....!!!!!");
getch();
exit(2);
}
}
else
{
gotoxy(20,10);
cout<<"FILE OPENED SUCCESSFULLY";
getch();
}
recsize=sizeof(stud);
while(1)
{
menu_main(i);
getkey();
switch(key)
{
case UARROW:
i=i-1;
break;
case DARROW:
i=i+1;
break;
case ENTER:
execute_main(i);
break;
}
if(i==0)
i=5;
if(i==6)
i=1;
}
}