Complete listing of Variables06.cpp, Listing 6

/*File:  Variables06.cpp
This C++ program illustrates constants.  The
program shows that an attempt to modify the
value of a const variable after it is initialized
results in a compiler error.

The program displays the following output on the
screen when the offending statement is disabled
by turning it into a comment:



#include <iostream>
using namespace std;

class Variables06{
  static void classMain(){
    //Instantiate an object in dynamic memory
    // and save its reference in a pointer 
    // variable.
    Variables06* ptrToObject = new Variables06();

    //Invoke an instance function on the object.
    ptrToObject -> doSomething();
  }//End classMain function

  //An instance function of the Variables06 class
  void doSomething(){
    //Declare and initialize a constant.
    const double pi = 3.14159;

    //The following attempt to change the value
    // of a constant results in a compiler error.
    //pi = 16.5;

    cout << pi << endl;
  }//end doSomething function
};//End Variables06 class

int main(){
  return 0;
}//end main

Listing 6