题解 | #密码检查#

#include<stdio.h>
#include<string.h>
int main()
{
    int n = 0;//行数
    scanf("%d", &n);
    again:
    while (n--) 
    {
        int flag[3] = { 0 };//大写 小写 数字 各占一个，出现了加一，总和至少要两种
        char arr[101] = { '\0' };
        scanf("%s", arr);
        int len = strlen(arr);
        //解决2.4条件
        if ((arr[0] < '9' && arr[0] > '0') || len < 8)
        {
            printf("NO\n");
            continue;
        }
        //解决1.3条件
        for (int i = 0; i < len; ++i)
        {
            if ((arr[i] <= '9' && arr[i] >= '0') || (arr[i] >= 'A' && arr[i] <= 'Z') || (arr[i] >= 'a' && arr[i] <= 'z'))
            {
                if (arr[i] <= '9' && arr[i] >= '0')
                {
                    flag[0] = 1;
                }
                if (arr[i] >= 'A' && arr[i] <= 'Z')
                {
                    flag[1] = 1;
                }
                if (arr[i] >= 'a' && arr[i] <= 'z')
                {
                    flag[2] = 1;
                }
            }
            else
            {
                printf("NO\n");
                goto again;
            }
        }
        if (2 <= flag[0] + flag[1] + flag[2]) 
        {
            printf("YES\n");
        }
        else
            printf("NO\n");
    }
}