/*File:  Functions02.cpp

This C++ program illustrates functions having no
parameters and no return value.

This program displays the following text on the 
screen:

Hello World
Goodbye cruel world

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

#include <iostream>
using namespace std;

//A function prototype is required due to the
// placement of the goodbye function relative
// to the main function.  The main function
// requires the prototype in order to understand
// the interface to the goodbye function, which
// has not yet been defined when it is called.
void goodbye();//function prototype

//No function prototype is required for the
// hello function because it is defined before it
// is called.
void hello(){
  cout << "Hello World" << endl;
}//end hello
//---------------------------------------------//

int main(){//Global main function.
  hello();
  goodbye();
  return 0;
}//end main function
//---------------------------------------------//

void goodbye(){
  cout << "Goodbye cruel world" << endl;
}//end goodbye

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