题解 | #密码检查#

#include <stdio.h>
#include <ctype.h>
#include <string.h>
int main() {
    int n = 0;
    scanf("%d", &n);
    while (n--) {
        char str[101];
        scanf("%s", str);
        if (strlen(str) < 8 || isdigit(str[0])) {
            printf("NO\n");
            continue;
        }
        int upper = 0, lower = 0, digit = 0;
        for (int i = 0; str[i] != '\0'; i++) {
            if (islower(str[i]))
                lower++;
            else if (isupper(str[i]))
                upper++;
            else if (isdigit(str[i]))
                digit++;
            else {
                printf("NO\n");
                goto a;
            }
        }
            if(((lower>0)+(digit>0)+(upper>0))<2)
            {
                printf("NO\n");
                continue;
            }
            printf("YES\n");
         a:
         ;
    }
    return 0;
}