// Fig. 5.7: fig05_07.cpp
// Cube a variable using call-by-reference 
// with a pointer argument
#include <iostream>

using std::cout;
using std::endl;

void cubeByReference( int * );   // prototype

int main()
{
   int number = 5;

   cout << "The original value of number is " << number;
   cubeByReference( &number );
   cout << "\nThe new value of number is " << number << endl;
   return 0;
}

void cubeByReference( int *nPtr )
{
   *nPtr = *nPtr * *nPtr * *nPtr;  // cube number in main
}