/********************************************
 What:   demonstrate how "const" works.

*********************************************/

#include <iostream>

int main(void)
{
  const double Pi=3.14159;
  std::cout << "Pi=" << Pi << std::endl;

  // Now change Pi
  Pi = 3.14; // This will not (and should not)  work

  std::cout << "Now Pi=" << Pi << std::endl;
  return(0);
}