C語言簡易三子棋

 　　這是本人依據現學知識寫的簡易三子棋,也不是那麼簡潔明瞭,望大佬指點

#define _CRT_SECURE_NO_WARNINGS
#include<stdio.h>
#include<stdlib.h>
#define ROW 3
#define COL 3
char chess_board[ROW][COL];
int PlayGame(int choice){
    printf("************************
");
    printf("*  歡迎來到三子棋遊戲  *
");
    printf("*       請您選擇       *
");
    printf("*      1.開始遊戲      *
");
    printf("*      2.離開遊戲      *
");
    printf("************************
");
    while (1){
        scanf("%d", &choice);
        if (choice == 1)
        {
            return 1;
            break;
        }
        else if (choice == 2)
        {
            return 0;
            break;
        }
        else
        {
            printf("輸入非法,請重新輸入!");
            continue;
        }
    }
}
int Init(char a[ROW][COL]){
    for (int row = 0; row <ROW; row++){
        for (int col = 0; col < COL; col++)
        {
            a[row][col] = `  `;
        }
    }
    return 0;
}
void Print(char a[ROW][COL]){
    printf("           
");
    for (int i = 0; i < ROW; i++){
        printf("  %c | %c  | %c 
", a[i][0], a[i][1], a[i][2]);
        if (i != 3){
            printf("----|----|----
");
        }
    }
}
void PlayerMove(char a[ROW][COL]){
    int row = -1;
    int col = -1;
    while (1){
        printf("請您選擇落子點座標:");
        scanf("%d %d", &row, &col);
        if (row<0 || row>2 || col<0 || col>2){
            printf("輸入非法,請重新輸入!");
            continue;
        }
        else if (a[row][col] == `x` || a[row][col] == `o`)
        {
            printf("已有棋子,請重新選擇座標!");
            continue;
        }
        else
        {
            a[row][col] = `o`;
            break;
        }

    }
}
int IsFull(char a[ROW][COL]){
    int sum = 0;
    for (int row = 0; row < ROW; row++)
    {
        for (int col = 0; col < COL; col++)
        {
            if (a[row][col] != ` `)
            {

                sum++;
            }
        }
    }
    if (sum == 9){
        return 1;
    }
}
char Checkwinner(char a[ROW][COL]){
    //1.判斷三子 橫 豎 斜
    for (int row = 0; row < ROW; row++){
        if (a[row][0] == a[row][1] && a[row][0] == a[row][2] && a[row][0] != ` `)
        {
            return `p`;
        }
    }
    for (int col = 0; col < COL; col++){
        if (a[0][col] == a[1][col] && a[0][col] == a[2][col] && a[0][col] != ` `)
        {
            return `p`;
        }
    }
    if (a[0][0] == a[1][1] && a[0][0] == a[2][2] && a[0][0] != ` `)
    {
        return `p`;
    }
    if (a[0][2] == a[1][1] && a[0][2] == a[2][0] && a[0][2] != ` `){
        return `p`;
    }
}




void ComputeMove(char a[ROW][COL]){
    printf("請電腦落子!
");
    while (1){
        int col = rand() % 3;
        int row = rand() % 3;
        if (a[row][col] == ` `)
        {
            a[row][col] = `x`;
            break;
        }
        else continue;
    }
}
void Game(){
    Init(chess_board);//2.棋盤初始化
    Print(chess_board);//3.列印棋盤
    while (1){

        PlayerMove(chess_board);//4.使用者落子
        Print(chess_board);
        if (Checkwinner(chess_board) == `p`)
        {
            printf("玩家獲勝!
");
            break;
        }
        if (IsFull(chess_board) == 1)//2.判斷是否和棋
        {
            printf("平局!");
            break;
        }
        ComputeMove(chess_board);//6.電腦隨機落子
        Print(chess_board);//3.列印棋盤
        if (Checkwinner(chess_board) == `p`)
        {
            printf("電腦獲勝!
");
            break;
        }

        if (IsFull(chess_board) == 1)//2.判斷是否和棋
        {
            printf("平局!
");
            break;
        }
    }
}


int main(){
    int choice = 0;
    if (PlayGame(choice) == 1) {   //1.選擇是否開始遊戲  a)開始  b)離開
         Game();

    }
    system("pause");
}