it keeps on saying '{' token error.
did I put something wrong that the program keeps on saying '{' token error?
#include <stdio.h>
#include <math.h>
int Calendar(int daycode,int year,int leapyear);
void dec_bin(int bin)
{
int x, y;
x = y = 0;
for(y = 7; y >= 0; y--)
{
x = bin / (1 << y);
bin = bin - x * (1 << y);
printf("%d", x);
}
printf("\n");
}
int main()
{
int year;
int daycode;
int leapyear;
int month;
int skip;
int day;
int daysinmonth;
double a;
double b;
double c;
double angleB;
double angleA;
double angleC;
double PI=3.14159265;
int m1[5][5],i,j,k,m2[5][5],mult[5][5],r1,c1,r2,c2;
int x;
char z;
menu:
printf("***********************************");
printf("\n ~* M E N U *~\n");
printf("***********************************");
printf("\n\n 1: Multiplication of two matrices.\n\n");
printf(" 2: Solving Triangle using Sine Law.\n\n");
printf(" 3: Table Dec, Hex, Oct and Bin.\n\n");
printf(" 4: Calendar Program.\n\n");
printf(" 5: End Program.\n\n");
printf("***********************************\n\n\n");
printf("choice:");
scanf("%d",&x);
if (x==1)
{
{
Matrix:
printf("Enter number of rows and columns of first matrix MAX 5\n");
scanf("%d%d",&r1,&c1);
printf("Enter number of rows and columns of second matrix MAX 5\n");
scanf("%d%d",&r2,&c2);
if(c1=r2)
{
printf("Enter rows and columns of First matrix \n");
printf("Row wise\n");
for(i=0;i<r1;i++)
{
for(j=0;j<c1;j++)
scanf("%d",&m1[i][j]);
}
printf("You have entered the first matrix as follows:\n");
for(i=0;i<r1;i++)
{
for(j=0;j<c1;j++)
printf("%d\t",m1[i][j]);
printf("\n");
}
printf("Enter rows and columns of Second matrix \n");
printf("Again row wise\n");
for(i=0;i<r2;i++)
{
for(j=0;j<c2;j++)
scanf("%d",&m2[i][j]);
}
printf("You have entered the second matrix as follows:\n");
for(i=0;i<r2;i++)
{
for(j=0;j<c2;j++)
printf("%d\t",m2[i][j]);
printf("\n");
}
printf("********************************************\n\n");
printf("Now we multiply both the above matrix \n");
printf("The result of the multiplication is as follows:\n");
for(i=0;i<r1;i++)
{
for(j=0;j<c2;j++)
{
mult[i][j]=0;
for(k=0;k<c1;k++)
{
mult[i][j]=mult[i][j]+m1[i][k]*m2[k][j];
}
printf("%d\t",mult[i][j]);
}
printf("\n");
}
}
else
{
printf("Matrix multiplication cannot be done");
}
}
again:
printf("\n\nDo you want to try again?[y/n]:");
scanf("%s",&z);
if ((z=='y')||(z=='Y'))
{
goto Matrix;
}
else if ((z=='n')||(z=='N'))
{
goto menu;
}
else
{
printf("invalid choice");
goto again;
}
}
else if (x==2)
{
{
Sine:
printf("Solving a triangle and calculating it's angle\n\n");
printf("\n\nEnter the side length of A:");
scanf("%lf",&angleA);
printf("\n\nEnter the side length of B:");
scanf("%lf",&angleB);
printf("\n\nEnter the size of the angle of a:");
scanf("%lf",&a);
angleC = 180-(angleA+angleB);
b = (a*(sin(angleB*PI/180)))/((sin(angleA*PI/180)));
c = (a*(sin(angleC*PI/180)))/((sin(angleA*PI/180)));
printf("\nThe side length of b is:%lf",b);
printf("\nThe side length of c is:%lf",c);
printf("\nThe angle of C is:%lf",angleC);
}
again1:
printf("\n\nDo you want to try again?[y/n]:");
scanf("%s",&z);
if ((z=='y')||(z=='Y'))
{
goto Sine;
}
else if ((z=='n')||(z=='N'))
{
goto menu;
}
else
{
printf("invalid choice");
goto again1;
}
}
else if (x==3)
{
{
table:
{
int count;
printf("\n\n\nConversion table - Decimal, Hexadecimal, Octal, Binary\n\n");
printf("Dec\tHex\tOct\tBin\n");
printf("----------------------------------\n");
for (count = 0; count <=256; count=count +1)
{
printf("%d \t%x \t%o\t",count, count, count);
dec_bin(count);
}
}
}
again2:
printf("\n\nDo you want to try again?[y/n]:");
scanf("%s",&z);
if ((z=='y')||(z=='Y'))
{
goto table;
}
else if ((z=='n')||(z=='N'))
{
goto menu;
}
else
{
printf("invalid choice");
goto again2;
}
}
else if (x==4)
{
calendar:
{
printf(" \n~* Calendar Program *~\n");
printf("--------------------------\n\n\n");
printf("Enter a year:");
scanf("%d",&year);
{
leapyear=(!(year%4)&&(year%100))||!(year%4);
daycode=((year-1)*365+((year-1)/4)-((year-1)/100)+((year-1)/400)+1)%7;
Calendar(daycode,year,leapyear);
}
}
int Calendar(int daycode,int year,int leapyear)
{
for(month=1;month<=12;month++)
{
skip=0;
day=1;
if (month==1||month==3||month==5||month==7||month==8||month==10||month==12)
daysinmonth=31;
else if(month==4||month==6||month==9||month==11)
daysinmonth=30;
else if(month==2)
if(leapyear==1)
daysinmonth=29;
else if(leapyear==0)
daysinmonth=28;
printf("\n***************************");
switch(month)
{
case 1: printf("\n\n\t%d\n\nJANUARY %d",year,year);break;
case 2: printf("\nFEBRUARY %d",year);break;
case 3: printf("\nMARCH %d",year);break;
case 4: printf("\nAPRIL %d",year);break;
case 5: printf("\nMAY %d",year);break;
case 6: printf("\nJUNE %d",year);break;
case 7: printf("\nJULY %d",year);break;
case 8: printf("\nAUGUST %d",year);break;
case 9: printf("\nSEPTEMBER %d",year);break;
case 10: printf("\nOCTOBER %d",year);break;
case 11: printf("\nNOVEMBER %d",year);break;
case 12: printf("\nDECEMBER %d",year);break;
}
printf ("\nSUN MON TUE WED THU FRI SAT\n");
while(day<=daysinmonth)
{
while(day<=daysinmonth)
{
while(skip<daycode)
{
printf(" ");
skip=skip+1;
}
printf("%2d ",day);
day=day+1;
if(((day+daycode)%7)==1)
{
printf("\n");
}
}
}
daycode=(daycode+daysinmonth)%7;
}
}
again3:
printf("\n\nDo you want to try again?[y/n]:");
scanf("%s",&z);
if ((z=='y')||(z=='Y'))
{
goto calendar;
}
else if ((z=='n')||(z=='N'))
{
goto menu;
}
else
{
printf("invalid choice");
goto again3;
}
}
else if (x==5)
{
goto exit;
exit:
return (0);
}
else
{
printf("invalid choice\n\n");
goto menu;
}
}
