/*
 * Callback table, used for abstracting behaviour. Also known as function
 * pointer table This is whats caleld a vtable in C++ terms.
 *
 * Commonly used as a form of polymorphism
 */

#include <stdio.h>

static int global = 0;

typedef struct {
    void (*put)(int);
    int (*get)();
} Test;

void my_put(int a) { global = a; }
int my_get() { return global; }

void executor(Test *t) {
    t->put(10);
    int got = t->get();

    printf("Got: %d\n", got);
}

int main() {
    Test t = {.get = my_get, .put = my_put};
    executor(&t);
    return 0;
}