Thread: passing function pointer as argument

hello, so im fiddling with this topic. i don't understand why its running properly in debugger but the output is wrong in the commandline.

Code:

#include <stdio.h>

int mul(int a, int b);
int div(int a, int b);
int calc(int (*op_ptr)(int, int), int a, int b);

int main(){
    printf("%d", calc(*(&div), 10, 5));
    int (*c_ptr)(int (*a)(int,int), int, int) = calc;
    printf("%d", (*c_ptr)(mul, 210, 5));
}


int mul(int a, int b){
    return a*b;
}

int div(int a, int b){
    return a/b;
}

int calc(int (*op_ptr)(int, int), int a, int b){
    return (*op_ptr)(a, b);
}

What do you mean "the output is wrong"?

Do you see 21050 being printed?

It might help if you put some newlines in your printf, so you see
2
1050