走迷宫

走迷宫，注意那两个getchar，第二个getchar是为了接受换行符。

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

void show(int a[10][10])
{
    printf("----------------------------
");
    for (int i = 0; i < 10;i++)
    {
        for (int j = 0; j < 10;j++)
        {
            printf("%3d", a[i][j]);
        }
        printf("
");
    }
}


void main()
{
    int a[10][10] = { 
                       {,  0, 0, 2,  0,  0,  0,0,0,0 },
                       { 0, 0, 2, 0 , 0, 0, 0, 0, 0,0 }, 
                       { 0, 0, 2, 2, 2, 0, 0, 0, 0, 0 },
                       { 0, 0, 2, 0, 0, 0, 0, 0, 0, 0 }, 
                       { 0, 0, 0, 0, 2, 0, 0, 0, 0, 0 },
                       { 0, 0, 2, 0, 0, 0, 0, 0, 0, 0 }, 
                       { 0, 0, 2, 0, 0, 0, 0, 0, 0, 0 }, 
                       { 0, 0, 2, 0, 0, 0, 0, 0, 0, 0 }, 
                       { 0, 0, 2, 0, 0, 0, 0, 0, 0, 0 }, 
                       { 0, 0, 2, 0, 0, 0, 0, 0, 0, 0 }, 
　　　　　　　　　　　　};
    show(a);

    int x, y;
    x = 0; 
    y = 0;
    a[x][y] = 1;

    show(a);

    while (1)
    {
    
        char ch = getchar();
        getchar();//回车

        switch (ch)
        {
        case 'a':
            if (y - 1 >= 0 && a[x][y - 1]!=2)
            {
                int temp = a[x][y - 1];
                a[x][y - 1] = a[x][y];
                a[x][y] = temp;
                y = y - 1;
                
            }


            break;
        case 'd':
            if (y + 1 <= 9 && a[x][y + 1] != 2)
            {
                int temp = a[x][y +1];
                a[x][y + 1] = a[x][y];
                a[x][y] = temp;
                y = y + 1;
                
            }


            break;
        case 'w':
            if (x - 1 >= 0 && a[x-1][y ] != 2)
            {
                int temp = a[x-1][y];
                a[x-1][y ] = a[x][y];
                a[x][y] = temp;
                x-=1;
                
            }
            break;
        case 's':
            if (x + 1 <= 9 && a[x + 1][y] != 2)
            {
                int temp = a[x + 1][y];
                a[x + 1][y] = a[x][y];
                a[x][y] = temp;
                x += 1;
                
            }

            break;
        default:
            break;
        }
        show(a);

    }

    system("pause");

}