/************************************************************************
*Triskaidekaphobia
*Dsimulates the game thirteen stones
*programmer: Jason Calcagno
*AP/IB computer science
*Input:		number of stones selected on a fiven turn
*Output:	a message declaring the winner
***********************************************************************/
#include <iostream.h>

#include<iostream.h>

void main()
{
    int numStones,   // Number of stones left
        numPicked,   // Number of stones picked up by current player
        player;      // Player identifier (1 or 2)

    // Output the rules.
    cout << endl;
    cout << "You have before you a pile of 13 stones. "
         << "Players 1 and 2 alternate" << endl;
    cout << "picking from 1 to 3 stones off the pile. "
         << "The last player to pick up " << endl;
    cout << "a stone is the winner. Good luck."  << endl;
    cout << endl;

    // Play the game.
    numStones = 13;
    player = 1;

    while (numStones>=1)   // While there is a stone remaining
    {
		cout << "Player " <<player<< " pick your stones. you have "<< numStones <<" to pick from : ";// Prompt player to pick up 1-3 stones.
		cin >> numPicked; 
		if ((numPicked > 3)||(numPicked<1))
		{
			cout<< "sorry, thats not legal... pick again... ";
			cin >> numPicked;
		}
		if (numPicked>numStones)
		{
			cout<< "sorry, thats not legal... pick again... ";
			cin >> numPicked;
		}
		if ((numPicked>=1)&&(numPicked <= 3))
		{
			numStones = numStones - numPicked;
		}
		if (numStones > 0)
		{
			if (player == 1)
			{
				player = 2;
			}
			else
			{
				player = 1;
			}
		}
	
    }

    cout << "No stones left -- "
         << "player " << player << " is the winner!" << endl;


}
/*

You have before you a pile of 13 stones. Players 1 and 2 alternate
picking from 1 to 3 stones off the pile. The last player to pick up
a stone is the winner. Good luck.

Player 1 pick your stones. you have 13 to pick from : 3
Player 2 pick your stones. you have 10 to pick from : 1
Player 1 pick your stones. you have 9 to pick from : 2
Player 2 pick your stones. you have 7 to pick from : 2
Player 1 pick your stones. you have 5 to pick from : 1
Player 2 pick your stones. you have 4 to pick from : 3
Player 1 pick your stones. you have 1 to pick from : 1
No stones left -- player 1 is the winner!
Press any key to continue


You have before you a pile of 13 stones. Players 1 and 2 alternate
picking from 1 to 3 stones off the pile. The last player to pick up
a stone is the winner. Good luck.

Player 1 pick your stones. you have 13 to pick from : 1
Player 2 pick your stones. you have 12 to pick from : 3
Player 1 pick your stones. you have 9 to pick from : 2
Player 2 pick your stones. you have 7 to pick from : 4
sorry, thats not legal... pick again... 1
Player 1 pick your stones. you have 6 to pick from : 3
Player 2 pick your stones. you have 3 to pick from : 3
No stones left -- player 2 is the winner!
Press any key to continue

*/