#include <iostream>

using namespace std;

void squareit(int number);

int main()
{
   int x;
   x = 5;

   cout << "main says x = " << x << endl;

   squareit(x);

   cout << "main says x = " << x << endl;

   return 0;
}

void squareit(int number)
{
   number = number * number;
   cout << "squareit says number = " << number << endl;
}