project10.cpp

#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] = {' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' '};
    char player = 'X';
    char computer = 'O';
    bool running = true;

    drawBoard(spaces);

    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 << "Thank's 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 a place a marker (1-9): ";
        std::cin >> number;
        number--;
        if( spaces[number] == ' '){
            spaces[number] = player;
            break;
        }
    } while (!number > 0 || !number < 8);
    
}
void computerMove(char *spaces, char computer){
    int number;
    srand(time(0));

    while (true) {
        number = rand() % 9;
        if (spaces[number] == ' '){
            spaces[number] = computer;
            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";
    }
    if ((spaces[3] != ' ') && spaces[3] == spaces[4] && spaces[4] == spaces[5]) {
        spaces[3] == player ? std::cout << "YOU WIN!\n" : std::cout << "YOU LOSE!\n";
    }
    if ((spaces[6] != ' ') && spaces[6] == spaces[7] && spaces[7] == spaces[8]) {
        spaces[6] == player ? std::cout << "YOU WIN!\n" : std::cout << "YOU LOSE!\n";
    }
    if ((spaces[0] != ' ') && spaces[0] == spaces[3] && spaces[3] == spaces[6]) {
        spaces[0] == player ? std::cout << "YOU WIN!\n" : std::cout << "YOU LOSE!\n";
    }
    if ((spaces[1] != ' ') && spaces[1] == spaces[4] && spaces[4] == spaces[7]) {
        spaces[1] == player ? std::cout << "YOU WIN!\n" : std::cout << "YOU LOSE!\n";
    }
    if ((spaces[2] != ' ') && spaces[2] == spaces[5] && spaces[5] == spaces[8]) {
        spaces[2] == player ? std::cout << "YOU WIN!\n" : std::cout << "YOU LOSE!\n";
    }
    if ((spaces[0] != ' ') && spaces[0] == spaces[4] && spaces[4] == spaces[8]) {
        spaces[0] == player ? std::cout << "YOU WIN!\n" : std::cout << "YOU LOSE!\n";
    }
    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;
    }
    return true;
}
bool checkTie(char *spaces){
    for ( int i = 0; i < 9; i++ ) {
        if ( spaces[i] == ' ') {
            return false;
        } 
    }
    std::cout << "IT'S A TIE!\n";
    return true;
}