#include struct rational{

int num;

int den; };

struct rational sum(struct rational a, struct rational b) {

struct rational c;

c.num= a.num*b.den+b.num*a.den; c.den=a.num*b.den;

return c;

}

int main() {

struct rational x,y,z;

printf("Enter all values:");

scanf("%d %d %d %d",&x.num,&x.den,&y.num,&y.den); z=sum(x,y);

printf("The sum is %d/%d",z.num,z.den);

return 0; }