// This program uses a function that returns true or false.
#include <iostream>
using namespace std;

// Function prototype
bool isEven(int);

int main()
{
   int val;

   // Get a number from the user.
   cout << "Enter an integer and I will tell you ";
   cout << "if it is even or odd: ";
   cin >> val;
   
   // Indicate whether it is even or odd.
   if (isEven(val))
      cout << val << " is even.\n";
   else
      cout << val << " is odd.\n";
   return 0;
}

//*****************************************************************
// Definition of function isEven. This function accepts an        *
// integer argument and tests it to be even or odd. The function  *
// returns true if the argument is even or false if the argument  *
// is odd. The return value is an bool.                           *
//*****************************************************************

bool isEven(int number)
{
   bool status;

   if (number % 2)
      status = false;   // number is odd if there's a remainder.
   else
      status = true;    // Otherwise, the number is even.
   return status;
}