/* Test Function Pointers (TestFunctionPointer.cpp) */
#include <iostream>
using namespace std;

int arithmetic(int, int, int (*)(int, int));
    // Take 3 arguments, 2 int's and a function pointer
    //   int (*)(int, int), which takes two int's and return an int
int add(int, int);
int sub(int, int);

int add(int n1, int n2) { return n1 + n2; }
int sub(int n1, int n2) { return n1 - n2; }

int arithmetic(int n1, int n2, int (*operation) (int, int)) {
   return (*operation)(n1, n2);
}

int main() {
   int number1 = 5, number2 = 6;

   // add
   cout << arithmetic(number1, number2, add) << endl;
   // subtract
   cout << arithmetic(number1, number2, sub) << endl;
}