// *****************************************************************
// Author:	Zhixiang Chen
// Class:	CSCI/CMPE 1170, Spring 2009
// Lab 9:	Simple while-loops
// Date:	January 12, 2009
// Comment: The code here is meant to be revised.
//
//-----------------------------------------------------------------
//
// This lab exercise is to play with simple while loops to process 
// a list of integers and find simple statistical information
//
// Compile and run your program. When everything is fine,
// print your .cpp file and turn it to me or the TA.
// *****************************************************************

#include < iostream >
#include <fstream >
#include < string >
#include < cstring >
#include < cmath> 
#include <cstdlib>
#include <iomanip>

using namespace std; 

int main( )
{
	//variable declarations
	int number;					//var to store an int value
	int sum, min, max, avg;		//vars to store simple statistical info
	int counter;				//a counter for controling the loop
	int size;					//another counter

	/************************************************************
	 Part A. A counter controled while loop
	 ************************************************************/
	cout<<"************** PLay Counter Controled while-Loop************/"; 
	
	//initialization
	sum=min=max=avg =0;
	cout<<" Enter How many integers do you want to play with? => "; 
	cin>>counter;				//get the counter
	size = counter;				//memory the counter
	
	//start the loop
	while {counter > 0)
	{		
		cout<<"Enter an interger ==> ";				
		cin>>number;			//get a number
		sum += sum;			
		if (number > max)
			max = number; 
		if (number < min)
			min = number;
		
		counter--; 
	} 

	cout<<" You entered " << counter << " many integers. " <<endl
		<<" The sum is " << sum <<endl 
		<<" The min is " <<min<<endl
		<<" The Avg is " << sum / size<<endl; 

	/************************************************************
	 Part B. Sentinel/Event controled while loop loop
	 ************************************************************/
	cout<<"************** PLay Sentinel/Event controled while Loop************/"; 
	cout<<" Compute simple stats of integers. Stop -99 is entered.";	
	//intitialization
	counter=sum=min=max=avg =0;
	cout<<"Enter an interger ==> ";				
	cin>>number;	
	
	//start the loop
	while (number != -99)
	{
		counter++;			//count numbers
		sum += sum;			
		if (number > max)
			max = number; 
		if (number < min)
			min = number;
		
		cout<<"Enter an interger ==> ";				
		cin>>number;	
	}
	
	cout<<" You entered " << counter << " many integers. " <<endl
		<<" The sum is " << sum <<endl 
		<<" The min is " <<min<<endl
		<<" The Avg is " << sum / counter <<endl; 


	/************************************************************
	 Part C. Sentinel/Event controled while loop -
		break out within the loop 
	 ************************************************************/
	cout<<"************** PLay Sentinel/Event controled while-loop************/"
		<<"************** Break out within the loop **************************/"; 
	cout<<" Compute simple stats of integers. Stop -99 is entered."; 
	//initialization
	counter=sum=min=max=avg =0;

	//start the loop
	while (true)		//loop forever but break from within
	{ 
		//get a number
		cout<<"Enter an interger ==> "; 
		cin>>number; 

		if (number == -99) //check for event -99. If happened, then break 
		{
			cout<<" Event -99 happened, so break out......... "; 
			break; 
		}
		counter += 1; 
		sum += sum; 
		if (number > max)
			max = number; 
		if (number < min)
			min = number; 
		
	}
	cout<<" You entered " << counter << " many integers. " <<endl
		<<" The sum is " <<sum <<endl 
		<<" The min is " <<min<<endl
		<<" The Avg is " << sum/counter<<endl; 



	/*********************************************************************************
	 The following three parts are for you to complete.
	 *********************************************************************************/

	/*********************************************************************************
	 Part A. Write a counter-controled while-loop to process only event numbers
	 *********************************************************************************/
	 //your codes are here:

	/*********************************************************************************
	 Part B. Write an event-controled while-loop to process only event numbers
	 *********************************************************************************/
	 //your codes are here:

	/*********************************************************************************
	 Part C. Write an event-controled while-loop to process only event numbers
	 This breaks within the loop
	 *********************************************************************************/
	 //your codes are here:

	//well done and exit
	return 0; 
}