1 /**

     2  * test/demos/function_pointers.c

     3  * Copyright (C) 2008 Markus Broeker

     4  */

     5 

     6 #include <stdio.h>

     7 #include <stdlib.h>

     8 

     9 typedef struct T {

    10 	int a;

    11 	int b;

    12 } T;

    13 

    14 int plus(T t)

    15 {

    16 	return t.a+t.b;

    17 }

    18 

    19 int minus(T t)

    20 {

    21 	return t.a-t.b;

    22 }

    23 

    24 int func(T t, int (*ptrFunc)(T))

    25 {

    26 	return ptrFunc(t);

    27 }

    28 

    29 int main(int argc, char **argv)

    30 {

    31 	T t = {

    32 		.a = 20,

    33 		.b = 10

    34 	};

    35 

    36 	printf("Result: %d\n", func(t, &plus));

    37 	printf("Result: %d\n", func(t, &minus));

    38 

    39 	return EXIT_SUCCESS;

    40 }