题解 | #扫雷#

#include <stdio.h>
int main() {
    char arr[1000][1000];
    int n,m,x,y,i,j,num=0;
    scanf("%d %d", &n, &m);
    for (i = 1; i <= n; i++){
        getchar();              //吸收\n
        for (j = 1; j <= m; j++){
            scanf("%c", &arr[i][j]);
        }
    }
    for (i = 1; i <= n; i++){
        for (j = 1; j <= m; j++){
            if (arr[i][j] == '.'){       //判断是否为雷
                for (x = i - 1, num = 0; x <= i + 1; x++){      //扫描自身和周围8格有多少雷
                    for (y = j - 1; y <= j + 1; y++){
                        if (arr[x][y] == '*')       //如果是雷就计数
                            num++;
                    }
                }
                arr[i][j] = arr[i][j] + num + 2;    //将 '.' 转变为字符数字
            }
        }
    }
    for (i = 1; i <= n; i++){
        for (j = 1; j <= m; j++){
            printf("%c", arr[i][j]);
        }
        printf("\n");
    }
    return 0;
}