// Function example with prototype
#include <iostream>
using namespace std;

// The function prototype of the sum
int sum(int, int);

int main ()
{
  int s;
  s = sum(22, 33);
  cout << "The sum is " << s << endl;
  return 0;
}

// The function definition of sum
int sum (int a, int b) {
  int c;
  c = a + b;
  return c;
}