沿着2d网格移动一个值-Movingavaluealonga2dgrid

I am trying to write an application, in which the user inputs an integer

我正在编写一个应用程序，用户在其中输入一个整数

• 1 = up,
• 1 =,
• 2 = down
• 2 =下
• 3 = left
• 3 =左
• 4 = right and
• 4 =正确和
• x : moves along the 3x3 grid.
• x:沿着3x3网格移动。

I am not sure what I have done wrong, so any help would be appreciated.

我不知道我做错了什么，所以我很感激你的帮助。

#include "stdafx.h"
#include 

using namespace std;

char player = 'x';
char grid[3][3] = {{ player, '.' ,'.'},{'.', '.', '.' },{'.', '.', '.' } };

void Draw() {
    for (int row = 0; row <= 2; row++) {
        for (int col = 0; col <= 2; col++) {
        cout <> in;
    if (in == 1) {
        grid[posY][posX] = '.';
        posY = posY - 1;
        grid[posY][posX] = player;
    }
    else if (in == 2) {
        grid[posY][posX] = '.';
        posY = posY + 1;
        grid[posY][posX] = player;
    }
    else if (in == 3) {
        grid[posY][posX] = '.';
        posX = posX - 1;
        grid[posY][posX] = player;
    }
    else if (in == 4) {
        grid[posY][posX] = '.';
        posX = posX + 1;
        grid[posY][posX] = player;
    }
    else {
        grid[posY][posX] = player;
    }
    system("cls");
    Draw();
}
cin.get();
return 0;
}

1 个解决方案

    while (1)
{
    cin >> in;
    if (in == 1)
    {
        if(posY>0) // HERE
        {
            grid[posY][posX] = '.';
            posY = posY - 1;
            grid[posY][posX] = player;
        }
    }
    ...
}