// FILE: cons5a.cpp
//
// DESCRIPTION:
// This program sets variables "pi" and "e" to the value of pi and e
// using a function set_cons.  Next it prints out those variables.
// It illustrates:
//    pass-by-reference;
//    good coding practices using functions;
//    function prototypes;
//    projects.
//
// HISTORY:
// 09/25/97: Leon van Dommelen: version 1.0.0
// 03/03/99: Leon van Dommelen: updated the comments

//INCLUDES:
#include <iostream.h> // Include the definitions of cout and cin

//PROTOTYPES:
void set_cons(float &pi, float &e); // The function prototype for set_cons

//FUNCTION DEFINITIONS:

//Definition of the main function:
void main(void) // The main program, in which execution starts
{
  // Declarations:

  float pi = 0., e = 0.;    // declare pi and e and set them to zero

  // Executable statements:

  // Set the correct values for pi and e:
  set_cons(pi, e);

  //  Verify that the constants are set correctly:
  cout << "The constants are: pi = " << pi << "; e = " << e << endl;
}