dooz game

dooz.c

#include <asm-generic/errno.h>
#include <stdio.h>
#include <stdbool.h>

enum {
    E = 0,
    P1 = 'X',
    P2 = 'O'
};

bool running = true;
int pmap[3][3] = {};

void print_board()
{
    for (int i = 0; i < 3; i++) {
        printf("\n#############\n# ");
        for (int j = 0; j < 3; j++) {
            char c = pmap[i][j];
            if (c == E)
                c = (i*3+j) + '1';

            printf("%c # ", c);
        }
    }
    printf("\n#############\n");
}

void check4win(int player)
{
    int sum;

    for (int i = 0; i < 3; i++) {
        sum = 0;
        for (int j = 0; j < 3; j++)
            sum += pmap[i][j];
        if (sum == 3*player)
            goto win;

        sum = 0;
        for (int j = 0; j < 3; j++)
            sum += pmap[j][i];
        if (sum == 3*player)
            goto win;
    }

    if (pmap[0][0]+pmap[1][1]+pmap[2][2] == 3*player ||
            pmap[0][2]+pmap[1][1]+pmap[2][0] == 3*player)
        goto win;

    return;
win:
    printf("%c is winner!\n", player);
    running = false;
}

void pick_box(int n, int player)
{
    int boxcnt = 1;

    for (int i = 0; i < 3; i++) {
        for (int j = 0; j < 3; j++) {
            if (n-1 == (i*3+j))
                pmap[i][j] = player;
        }
    }
}

int main()
{
    int player = P1;

    while (1) {

        int n;
        print_board();

        check4win(P1);
        check4win(P2);
        if (!running)
            break;

        printf("Enter box number: ");
        scanf("%d", &n);

        pick_box(n, player);

        if (player == P1)
            player = P2;
        else
            player = P1;
    }

    return 0;
}