#include<stdio.h>
struct s {
int a;
int b;
};
void fun(struct s *x ,struct s *y,struct s *sum)
{
sum->a = x->a + y->a;
sum->b = x->b + y->b;
}
int main()
{
struct s obj1 ={10,10.8}, obj2 = {20, .2}, obj3;
fun(&obj1, &obj2, &obj3);
printf("size of %ld\n", sizeof(struct s));
printf("%d %d", obj3.a,obj3.b);
return 0;
}