CPP-Practice/TicTacToeGame.cpp at main · KylepKing/CPP-Practice · GitHub

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#include <iostream>
#include <ctime>


void drawBoard( char *spaces);
void playerMove( char *spaces, char player);
void computerMove( char *spaces, char computer);
bool checkWinner( char *spaces, char player, char computer);
bool checkTie(char *spaces);

int main()
{
    char spaces[9] = {' ', ' ', ' ',
                      ' ', ' ', ' ',
                      ' ', ' ', ' '}; // 3x3 tic tac toe board
    char player = 'X';
    char computer = 'O';
    bool running = true;

    drawBoard(spaces); // draws the board, pass array decays to pointer so dont need to make ita pointer

    while(running)
    {
        playerMove(spaces, player);
        drawBoard(spaces);

        if(checkWinner(spaces, player, computer))
        {
            running = false;
            break;
        }
        else if (checkTie(spaces))
        {
            running = false;
            break;
        }


        computerMove(spaces, computer);
        drawBoard(spaces);

        if(checkWinner(spaces, player, computer))
        {
            running = false;
            break;
        }
        else if (checkTie(spaces))
        {
            running = false;
            break;
        }
    }
    std::cout << "Thanks for playing!!!\n";
    return 0;
}

void drawBoard( char *spaces)
{
    std::cout << '\n';
    std::cout << "     |     |     \n";
    std::cout << "  " << spaces[0] << "  |  " << spaces[1] << "  |  " << spaces[2] << "  \n";
    std::cout << "_____|_____|_____" << '\n';
    std::cout << "     |     |     \n";
    std::cout << "  " << spaces[3] << "  |  " << spaces[4] << "  |  " << spaces[5] << "  \n";
    std::cout << "_____|_____|_____" << '\n';
    std::cout << "     |     |     \n";
    std::cout << "  " << spaces[6] << "  |  " << spaces[7] << "  |  " << spaces[8] << "  \n";
    std::cout << "     |     |     \n";
    std::cout << '\n';
}

void playerMove( char *spaces, char player)
{
    int number;
    do{
        std::cout << "Enter a spot to place a marker(1-9): ";
        std::cin >> number;
        number--; // to make it easier for the user to pick a number
        if(spaces[number] == ' ')
        {
            spaces[number] = player; // places the marker in the array
            break;
        }

    }while(!number > 0 || !number < 8);
}

void computerMove( char *spaces, char computer)
{
    int number;
    srand(time(0)); // seed the random number generator

    while(true)
    {
        number = rand() % 9; // generates a random number between 0 and 8
        if(spaces[number] == ' ')
        {
            spaces[number] = computer; // places the marker in the array
            break;
        }
    }
}

bool checkWinner( char *spaces, char player, char computer)
{
    if((spaces[0] != ' ') && ((spaces[0] == spaces [1]) && (spaces[1] == spaces[2])))
    {
        spaces[0] == player ? std::cout << "YOU WIN!\n" : std::cout << "YOU LOSE!\n";
    }
    else if((spaces[3] != ' ') && ((spaces[3] == spaces [4]) && (spaces[4] == spaces[5])))
    {
        spaces[0] == player ? std::cout << "YOU WIN!\n" : std::cout << "YOU LOSE!\n";
    }
    else if((spaces[6] != ' ') && ((spaces[6] == spaces [7]) && (spaces[7] == spaces[8])))
    {
        spaces[6] == player ? std::cout << "YOU WIN!\n" : std::cout << "YOU LOSE!\n";
    }
    else if((spaces[0] != ' ') && ((spaces[0] == spaces [3]) && (spaces[3] == spaces[6])))
    {
        spaces[0] == player ? std::cout << "YOU WIN!\n" : std::cout << "YOU LOSE!\n";
    }
    else if((spaces[1] != ' ') && ((spaces[1] == spaces [4]) && (spaces[4] == spaces[7])))
    {
        spaces[1] == player ? std::cout << "YOU WIN!\n" : std::cout << "YOU LOSE!\n";
    }
    else if((spaces[2] != ' ') && ((spaces[2] == spaces [5]) && (spaces[5] == spaces[8])))
    {
        spaces[2] == player ? std::cout << "YOU WIN!\n" : std::cout << "YOU LOSE!\n";
    }
    else if((spaces[0] != ' ') && ((spaces[0] == spaces [4]) && (spaces[4] == spaces[8])))
    {
        spaces[0] == player ? std::cout << "YOU WIN!\n" : std::cout << "YOU LOSE!\n";
    }
    else if((spaces[2] != ' ') && ((spaces[2] == spaces [4]) && (spaces[4] == spaces[6])))
    {
        spaces[2] == player ? std::cout << "YOU WIN!\n" : std::cout << "YOU LOSE!\n";
    }
    else
    {
        return false; // no winner yet
    }
    return true;
}

bool checkTie(char *spaces)
{
    for(int i = 0; i < 9; i++)
    {
        if(spaces[i] == ' ')
        {
            return false;
        }
    }
    std::cout << "IT IS A TIE!\n";
    return true;
}