Fraction problem in C

[JosAH]

(THREAD HIJACK ALERT!)

Jos-

Ever consider writing one of the tutorials? That was a good, concise explanation of a struct that was pretty easy to understand.

Maybe somewhere in the near future I might when I can find the time. I'll do some
of the Java tips of the week first and then we'll see whether people like it or if
they get sick and tired of my babbling ;-)

In the mean time it's difficult enough not to let posters go astray with their own
code.

Thanks for the compliment and

kind regards,

Jos

[xpun]

Maybe somewhere in the near future I might when I can find the time. I'll do some
of the Java tips of the week first and then we'll see whether people like it or if
they get sick and tired of my babbling ;-)

In the mean time it's difficult enough not to let posters go astray with their own
code.

Thanks for the compliment and

kind regards,

Jos

I was talking to my professor and he told me not to screw around with structures just yet so i did this instead . The program works i just need to figure out a way to reduce the resulting fraction.

#include <cstdlib>
#include <stdio.h>
#include <math.h>

char symbol;
int num1=0;
int num2=0;
int denum1=0;
int denum2=0;
int ansnum=0;
int denumans=0;
int ans=0;


int add(int n1,int d1,int n2,int d2, int*top,int*bottom) 
{
 int fnum = 0;
 int fden = 0;
 char  symhold = '/'; 
 if (d1==d2)
      { 
      fnum=(n1+n2);
      fden=(d2);
      *top=fnum;
      *bottom=fden;
      }
 else{       
   fnum=((n1 * d2) + (n2 * d1)); 
   fden=(d1 * d2); 
 *top=fnum;
 *bottom=fden;
 }
}
 int sub(int n1,int d1,int n2,int d2, int*top,int*bottom) 
 {
 int fnum = 0;
 int fden = 0;
 char  symhold = '/';
 if (d1==d2)
      { 
      fnum=(n1-n2);
      fden=(d2);
      *top=fnum;
      *bottom=fden;
      }
 else{     
   fnum=((n1 * d2)-(n2 * d1)); 
   fden=(d1*d2) ; 
 *top=fnum;
 *bottom=fden;
}
 }
int mul(int n1,int d1,int n2,int d2, int*top,int*bottom) 
{
 int fnum = 0;
 int fden = 0;
 char  symhold = '/';   
   fnum=(n1 * n2); 
   fden=(d1 * d2); 
 *top=fnum;
 *bottom=fden;
}
int div(int n1,int d1,int n2,int d2, int*top,int*bottom) 
{
 int fnum = 0;
 int fden = 0;
 int nh ;
 int dh ;
 char  symhold = '/';   
   nh=d2;
   dh=n2;
    fnum=(n1 * nh); 
   fden=(d1 * dh); 
 *top=fnum;
 *bottom=fden;
}
int main(void)
{
int numerator;
int denomonator;
 char   ra = 'y';
 while (ra != 'n')   
 {   
   

 printf(" Eter the symbol ");
   scanf ("%c",&symbol);  
  printf("Enter The 1st Numerator  ");
    scanf("%d",&num1);
  printf("Enter the 1st Denomanator  ");
    scanf("%d",&denum1);
  printf("Enter the 2nd Numerator  ");
   scanf("%d",&num2); 
  printf("Enter the 2nd Denomanator  ");
    scanf("%d",&denum2); 
       
    
    if (symbol == '+')
    {
    ans = add(num1,denum1,num2,denum2,&numerator,&denomonator);
    printf(" %d/%d\n",numerator,denomonator);
     }
    if (symbol == '-')
    {
    ans = sub(num1,denum1,num2,denum2,&numerator,&denomonator);
    printf(" %d/%d\n",numerator,denomonator);
     }
   if (symbol == '*')
    {
    ans = mul(num1,denum1,num2,denum2,&numerator,&denomonator);
    printf(" %d/%d\n",numerator,denomonator);
    }
    if (symbol == '/')
    {
    ans = div(num1,denum1,num2,denum2,&numerator,&denomonator);
    printf(" %d/%d\n",numerator,denomonator);
    }
getchar();
printf("would you like to use the fraction operator again? Y or N\n");
ra = getchar();
getchar();
}
}