Using array of pointers to functions in one statement : Function Pointer « Function « C Tutorial

1. C Tutorial
2. Function
3. Function Pointer

#include <stdio.h>

int sum(int x, int y){
  return x + y;
}

int product(int x, int y){
  return x * y;
}

int difference(int x, int y){
  return x - y;
}

int main(void){
  int a = 10;               
  int b = 5;                
  int result = 0;           
  int (*pfun[3])(int, int);           /* Function pointer array declaration */

  /* Initialize pointers */
  pfun[0] = sum;
  pfun[1] = product;
  pfun[2] = difference;

  /* Call all three functions through pointers in an expression */
  result = pfun[1](pfun[0](a, b), pfun[2](a, b));
  printf("\n\nThe product of the sum and the difference = %d\n",
                                                           result);

  return 0;
}

The product of the sum and the difference = 75