问Tic Tac脚趾游戏中的显示板

EN

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#include <stdio.h>
#include <stdbool.h>

int board[3][3] = {
                        {0, 0, 0},
                        {0, 0, 0},
                        {0, 0, 0}
                  };

int main (void)
{
    int const user1 = 1;
    int const user2 = 2;
    char move[];

    while (! all_locations_filled()) {
        printf("User-1, please enter your move:");
        scanf("%s", &move);

        if(valid_location(move)) {
            mark_location(user1, move);
            display_board();
        else if(won_the_game(user1) {
            printf("Congratulations User-1, You Won the Game!");
            break;
        }
        else {
            printf("Invalid Move");
        }
        }
        printf("User-2, please enter your move:");
        scanf("%s", &move);

        if(valid_location(move)) {
            mark_location(user2, move);
            display_board();
        else if(won_the_game(user2) {
            printf("Congratulations User-2, You Won the Game!");
            break;
        }
        else {
            printf("Invalid Move");
        }
        }
}

bool valid_location(char str[]) {
    if (str[] == "upperLeft" || str[] == "up" || str[] == "upperRight" || str[] == "left" || str[] == "center" || str[] == "right" || str[] == "lowerLeft" || str[] == "down" || str[] == "lowerRight") {
        return true;
    }
}

void mark_location(int userU, char str[]) {
    if (str[] == "upperLeft") {
        board[0][0] = userU;
    else if (str[] == "up") {
        board[0][1] = userU;
    else if (str[] == "upperRight") {
        board[0][2] = userU;
    else if (str[] == "left") {
        board[1][0] = userU;
    else if (str[] == "center") {
        board[1][1] = userU;
    else if (str[] == "right") {
        board[1][2] = userU;
    else if (str[] == "lowerLeft") {
        board[2][0] = userU;
    else if (str[] == "down") {
        board[2][1] = userU;
    else if (str[] == "lowerRight") {
        board [2][2] = userU;
    }
}