Callback with parameters

Question

Im trying to figure out how to use callbacks with parameters in C. The following isnt working. What is the best way to archieve it? (passing arguments for the callback function)

#include <stdio.h>

void caller(int (*cc)(int a)) {
    cc(a);
}

int blub(int a) {
    printf("%i", a); 
    return 1;
}

int main(int argc, char** argv)
{
    caller(blub(5));
    return 1;
}

Answer 1

You are doing the call before passing the function, not passing the callback function itself. Try this:

#include <stdio.h>

void caller(int (*cc)(int ),int a) {
    cc(a);
}

int blub(int a) {
    printf("%i", a); 
    return 1;
}

int main(int argc, char** argv)
{
    caller(blub, 1000);
    return 1;
}