Pointer Function examples in C

fnPtr.c

#include <stdio.h>

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

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

int domath(int (*mathop)(int, int), int x, int y) {
  return (*mathop)(x, y);
}



int main(void) {

  int a = domath(add, 10, 2);
  printf("Add gives: %d\n", a);

  int b = domath(substract, 10, 2);
  printf("Substract gives: %d\n", b);
  return 0;
}