Lab 11 v.05, C (gcc)

Lab 11 v.05

//gcc 5.4.0

#include  <stdio.h>

int add(struct fraction F){ 
    int a,B,b,s;
    a=F[0].n*F[1].d;
    b=F[1].n*F[0].d;
    B=F[0].d*F[1].d;
    s=a+b;
    printf("{%d+%d)/%d=%d/%d",a,b,B,s,B);
return(0);
                         }
int subtract(struct fraction F){ 
    int a,B,b,s;
    a=F[0].n*F[1].d;
    b=F[1].n*F[0].d;
    B=F[0].d*F[1].d;
    s=a-b;
    printf("{%d+%d)/%d = %d/%d",a,b,B,s,B);
return(0);
                         }
int multiply(struct fraction F){ 
    int a,b;
    a=F[0].n*F[1].n;
    b=F[0].d*F[1].d;
    printf("{%d/%d)*(%d/%d) = %d/%d",F[0].n,F[0].d,F[1].n,F[1].d,a,b);
return(0);
                         }
int divide(struct fraction F){ 
    int a,b;
    a=F[0].n*F[1].d;
    b=F[0].d*F[1].n;
    printf("{%d/%d)*(%d/%d) = %d/%d",F[0].n,F[0].d,F[1].n,F[1].d,a,b);
return(0);
                         }
int main(void)
{
int o=0;
while(o<1){
    int c=0;
    typedef struct{
        int n;
        int d;
    }fraction;
    fraction F[2];
    //int v[4];
   scanf("%d",&c);
                           
    switch(c){
        case 1:
            scanf("%d",&F[0].n);
            scanf("%d",&F[0].d);
            scanf("%d",&F[1].n);
            scanf("%d",&F[1].d);
            add(F);
            continue;
        case 2:
            scanf("%d",&F[0].n);
            scanf("%d",&F[0].d);
            scanf("%d",&F[1].n);
            scanf("%d",&F[1].d);
            subtract(F);
            continue;
        
        case 3:
            scanf("%d",&F[0].n);
            scanf("%d",&F[0].d);
            scanf("%d",&F[1].n);
            scanf("%d",&F[1].d);
            multiply(F);
            continue;
        case 4:
            scanf("%d",&F[0].n);
            scanf("%d",&F[0].d);
            scanf("%d",&F[1].n);
            scanf("%d",&F[1].d);
            divide(F);
            continue;
        case 5:
             o++;
             return(0);
              }
          }
}


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