// *****************************************************************
// Author:	Zhixiang Chen
// Class:	CSCI/CMPE 1170, Spring 2009
// Lab 14:	Header file for Lab 14
// Date:	January 12, 2009
// Comment: The code here is meant to be revised.
// *****************************************************************

#include <iostream>

using namespace std; 

#ifndef	LAB_14_HEAD_H		
#define LAB_14_HEAD_H

//this function shows the user menu
void showMenu()
{
	cout<<endl 
		<<"********User Menu***************************************************"<<endl 
		<<"Enter 1 to play with a void function without parameters              "<<endl
		<<"Enter 2 to play with a void function parameters		                "<<endl
		<<"Enter 3 to play with a value-returning function without parameters   "<<endl
		<<"Enter 4 to play with a value-returning function with   parameters    "<<endl;

	return;		//no value is returned here
}

//this is a void function without parameters
//it gets two numbers from the user and prints the sum
void fun_1( )
{
	//local variable declaration
	int x, y, sum; 

	//get two numbers
	cout<<"Enter two numbers ==> "; 
	cin>>x>>y; 

	//find the sum
	sum=x+y; 

	//show the sum
	cout<<x<<"  +  " <<y<<"  =  " <<sum<<endl; 

	//stop
	return;			//no value is returned here
}

//this is a void function with parameters
//it gets two numbers from the user and prints the sum
void fun_2(int x, int y)		//x and y are two parameters
{
	//local variable declaration
	int sum; 

	//find the sum
	sum=x+y; 

	//show the sum
	cout<<x<<"  +  " <<y<<"  =  " <<sum<<endl; 

	//stop
	return;			//no value is returned here
}

//this is a value returning function without parameters
//it gets two numbers from the user and returns the sum
int fun_3( )		//x and y are two parameters
{
	//local variable declaration
	int x, y, sum; 

	//get two numbers
	cout<<"Enter two numbers ==> "; 
	cin>>x>>y; 

	//find the sum
	sum=x+y; 

	//return sum
	return sum;			//sum is returned here
}

//this is a value-returning function with parameters
//it gets two numbers from the user and returns the sum
int fun_4(int x, int y)		//x and y are two parameters
{
	//local variable declaration
	int sum; 

	//find the sum
	sum=x+y; 

	//return sum
	return sum;			//sum is returned here
}


#endif