LearnC/(TicTacToe_R1.0) at main · ZunnurhaqZulkifli/LearnC · GitHub

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#include <stdio.h>
#include <stdlib.h>
#include <time.h>

//computer as player 2 or O

char square[10] = {'o' , '1', '2', '3', '4', '5', '6', '7', '8', '9'};
int choice,choice1,player,computer;

int checkForWin();
void computerTurn();
void displayBoard();
void markBoard(char mark);
void markBoard1(char mark);

int main()
{

    int gameStatus;
    char mark;

    player = 2;
    computer = 1;

    do
{       //Displaying The Board
        displayBoard();
        //Change Turns In Players
        player = (player == 2) ? 1 : 2;

        //Getting User Input
        printf("Player %d Enter a Number = " , player);
        scanf("%d" , &choice);
        //set the correct letter based on player name
        if (player == 1)
        mark = 'X';

        if (mark = (player == 1))
        mark = 'X';
        //marking the board
        markBoard(mark);

        computerTurn();

        gameStatus = checkForWin();

        player++;

    }while(gameStatus == -1);

    if (gameStatus == 1)
        printf("==>\aPlayer %d win" , --player);
    else
        printf("==>\aGame Draw");

    return 0;
}

int checkForWin()
{
    int returnValue = 0;

    if (square[1] == square[2] && square[2] == square[3])
    {
        returnValue = 1;
    }
    else if (square[4] == square[5] && square[5] == square[6])
        returnValue = 1;

    else if (square[7] == square[8] && square[8] == square[9])
        returnValue = 1;

    else if (square[1] == square[4] && square[4] == square[7])
        returnValue = 1;

    else if (square[2] == square[5] && square[5] == square[8])
        returnValue = 1;

    else if (square[3] == square[6] && square[6] == square[9])
        returnValue = 1;

    else if (square[1] == square[5] && square[5] == square[9])
        returnValue = 1;

    else if (square[3] == square[5] && square[5] == square[7])
        returnValue = 1;

    else if (square[1] != '1' && square[2] != '2' && square[3] != '3' && square[4] != '4'
             && square[5] != '5' && square[6] != '6' && square[7] != '7' &&
             square[8] != '8' && square[9] != '9')
        returnValue = 0;
    else
        returnValue = -1;

    return returnValue;

}

void displayBoard()
{
    //system("cls");

    printf("\n\n\tTic Tac Toe\n\n");

    printf("Player 1 (X)  -  Player 2 (O)\n\n\n");

    printf("     |     |     \n");
    printf("  %c  |  %c  |  %c \n" , square[1], square[2], square[3]);

    printf("_____|_____|_____\n");
    printf("     |     |     \n");

    printf("  %c  |  %c  |  %c \n", square[4], square[5], square[6]);

    printf("_____|_____|_____\n");
    printf("     |     |     \n");

    printf("  %c  |  %c  |  %c \n", square[7], square[8], square[9]);

    printf("     |     |     \n\n");

}
void computerTurn()
{
    time_t t;
        //int gameStatus;
        int computer, mark;
        int choice, player;
        int returnValue = 0;

        player = (computer == 1) ? 1 : 2;

        srand((unsigned)time(&t)); //<--- This is for a random number generator

        //get the random number
        choice1 = rand() %10; //<---This produces the numbers

        printf("Computer Selects: %d\n" , choice1);

        if (computer == 0)
        mark = 'O';

        if (mark = (computer == 0))
        mark = 'O';

        if (choice1 == choice)
        choice1+1;

        markBoard1(mark);

        return returnValue;

}

void markBoard(char mark)
{
    if (choice == 1 && square[1] == '1')
        square[1] = mark;

    else if (choice == 2 && square[2] == '2')
        square[2] = mark;

    else if (choice == 3 && square[3] == '3')
        square[3] = mark;

    else if (choice == 4 && square[4] == '4')
        square[4] = mark;

    else if (choice == 5 && square[5] == '5')
        square[5] = mark;

    else if (choice == 6 && square[6] == '6')
        square[6] = mark;

    else if (choice == 7 && square[7] == '7')
        square[7] = mark;

    else if (choice == 8 && square[8] == '8')
        square[8] = mark;

    else if (choice == 9 && square[9] == '9')
        square[9] = mark;

    else
    {
        printf("Invalid Move");

        player--;
        getchar();
    }
}

void markBoard1(char mark)
{
    if (choice1 == 1 && square[1] == '1')
        square[1] = mark;

    else if (choice1 == 2 && square[2] == '2')
        square[2] = mark;

    else if (choice1 == 3 && square[3] == '3')
        square[3] = mark;

    else if (choice1 == 4 && square[4] == '4')
        square[4] = mark;

    else if (choice1 == 5 && square[5] == '5')
        square[5] = mark;

    else if (choice1 == 6 && square[6] == '6')
        square[6] = mark;

    else if (choice1 == 7 && square[7] == '7')
        square[7] = mark;

    else if (choice1 == 8 && square[8] == '8')
        square[8] = mark;

    else if (choice1 == 9 && square[9] == '9')
        square[9] = mark;

}