Function pointers in C

function-pointer-test.c

/*
 * this program demonstrates function pointers in C
 */

#include <stdlib.h>
#include <stdio.h>


/* define our 'object' struct */
typedef struct {
    void (*my_cute_function)(void);
} MyObject;


/* function that returns 'new' type 'object' */
MyObject * new_object ()
{
    return malloc(sizeof(MyObject));
}


/* function we're pointing to */
void yeah ()
{
    printf("Test\n");
}


/* initialize the function pointer */
void object_init (MyObject * o)
{
    o->my_cute_function = yeah;
}


/* now test it out! */
int main (int argc, char** argv)
{
    MyObject * obj = new_object();

    object_init(obj);

    obj->my_cute_function();
}