Void Functions

//void function example
//void_function.cpp


#include <iostream>
using namespace std;

void say_hello();				//function prototypes (declarations)
void say_goodbye();

int main()
{

	int choice;

	cout << "Do you want me to say Hello(1) or Goodbye(2)?";
	cin >> choice;

	while (choice !=1 && choice!=2)
	{
		cout << "Choose again";
		cin >> choice;
	}
		
	if (choice == 1)
	{
		say_hello();				//function call
	}

		else
		{
			say_goodbye();
		}

	return 0;
} //end of main

//function definitions

void say_hello()
{
	cout << "\n\t\t********HELLO**********\n";	
}

void say_goodbye()
{
	cout << "\n\t\t\t\t\t@@@@@@@@@@@@@@@@@@@@Good-Bye@@@@@@@@@@@@@@@@@\n";
}