Need help with a program!!!

[airguitarman94]

Ok, so i created a Tic Tac Toe program, and i need to tweak it a little so that i play against the computer. can i get some help for that? (computer needs to play in random spots) Thanks! Here's the code...

//Include the libraries 
#include <iostream>
#include <string> 

//Use the standard namespace 
using namespace std;

//Declare the global variables
char Board[9];


//Declare functions 
void showBoard ( );
bool moveIsValid (int m);
int whoWon ( ); //Returns 0 if no one has won, 1 if player 1 has won, and 2 if player 2 has won.

void main ( )
{
	//Declare the local variables
	string Player_1_Name;
	string Player_2_Name;
	int Whose_Turn = 1; //Player 1's turn
	int Move; //Stores where the player wants to move
	int Total_Moves = 0;

	//Assign values to the playing board 
	Board[9] = '9';
	Board[1] = '1';
	Board[2] = '2';
	Board[3] = '3';
	Board[4] = '4';
	Board[5] = '5';
	Board[6] = '6';
	Board[7] = '7';
	Board[8] = '8';

	//Get players names
	cout << "Player 1: please enter your first name." << endl;
	cin >> Player_1_Name;
	cout << "Player 2: please enter your first name." << endl;
	cin >> Player_2_Name;

	while (whoWon ( ) == 0 && Total_Moves < 9)
	{

		//Do this until the player selects a valid move
		do
		{

			//Show the board 
			showBoard ( );

			//Tell the player where to move 
			if (Whose_Turn == 1) 
			{
				cout << Player_1_Name << ":It's your turn" << endl;
			}
			else
			{
				cout << Player_2_Name << ":It's your turn" << endl;
			}
			//Get the move
			cout << "Enter the number of the spot you'd like to move" << endl;
			cin >> Move;
		} while (moveIsValid (Move) != true);

		//Add 1 to total_moves
		Total_Moves++;

		//Change who's turn it is
		switch (Whose_Turn)
		{
		case (1):
			{
				Board[Move] = 'x';
				Whose_Turn = 2;
				break;
			}
		case (2):
			{
				Board[Move] = 'o';
				Whose_Turn = 1;
				
			}
		}
	}

	//Show the board
	showBoard ( );

	if (whoWon ( ) == 1)
	{
		cout << Player_1_Name << " has won the game!" << endl; 
	}
	else if (whoWon  ( ) == 2) 
	{
		cout << Player_2_Name << " has won the game!" << endl;
	}
	else 
	{
		cout << "It's a tie game!" << endl;
	}
	system ("PAUSE");
}	
 
void showBoard ( )
{
	cout << endl;
	cout << Board[ 7] <<" | " << Board[8] << " | " << Board[9] << endl;
	cout << "--+---+--" << endl;
	cout << Board[ 4] <<" | " << Board[5] << " | " << Board[6] << endl;
	cout << "--+---+--" << endl;
	cout << Board[ 1] <<" | " << Board[2] << " | " << Board[3] << endl;
	cout << endl;
}

bool moveIsValid (int m)
{
	if (Board[m] != 'x' && Board[m] != 'o' && m >=1 && m <=9)
	{
		return true;
	}
	else
	{
		return false;
	}
}

int whoWon ( )
{
	if (Board[7] == Board[8] && Board[8] == Board[9])
	{
		if (Board[7] == 'x')
		{
			return 1;
		}
		else
		{
			return 2;
		}
	}
	
	if (Board[4] == Board[5] && Board[5] == Board[6])
	{
		if (Board[4] == 'x')
		{
			return 1;
		}
		else
		{
			return 2;
		}
	}

	if (Board[1] == Board[2] && Board[2] == Board[3])
	{
		if (Board[1] == 'x')
		{
			return 1;
		}
		else
		{
			return 2;
		}
	}

	if (Board[7] == Board[5] && Board[5] == Board[3])
	{
		if (Board[7] == 'x')
		{
			return 1;
		}
		else
		{
			return 2;
		}
	}

	if (Board[8] == Board[5] && Board[5] == Board[2])
	{
		if (Board[8] == 'x')
		{
			return 1;
		}
		else
		{
			return 2;
		}
	}

	if (Board[9] == Board[6] && Board[6] == Board[3])
	{
		if (Board[9] == 'x')
		{
			return 1;
		}
		else
		{
			return 2;
		}
	}

	if (Board[7] == Board[4] && Board[4] == Board[1])
	{
		if (Board[7] == 'x')
		{
			return 1;
		}
		else
		{
			return 2;
		}
	}

	if (Board[9] == Board[5] && Board[5] == Board[1])
	{
		if (Board[2] == 'x')
		{
			return 1;
		}
		else
		{
			return 2;
		}
	}
	return 0;
}

[strongdrink]

duplicate?

http://cplusplus.com/forum/beginner/38262/

[bboy212]

i did not even look at your code but all you need to do is ma a random number beetween 1 and 9 and check if that spot is taken. if it is try again else take that spot.

[airguitarman94]

yes, i think it is a duplicate...

and yes, what kind of code should i add and where??