题解 | #密码强度等级#

俺是不是太笨了，只会if，如果没如果。。。

#include<stdio.h>
#include<string.h>
int main() {
    int len = 0, upralpha = 0, lwralpha = 0, digital = 0, other = 0;
    char str[301] = {'\0'};
    int grade = 0;
    while (~scanf("%s", str)) {
        len = strlen(str);  //字符串长度
        for (int i = 0; i < len; i++) {
            if ('A' <= str[i] && 'Z' >= str[i]) upralpha = 1; //标记是否有大写字母
            else if ('a' <= str[i] && 'z' >= str[i]) lwralpha = 1; //标记是否有小写字母
            else if ('0' <= str[i] && '9' >= str[i]) digital++; //记录数字个数
            else other++;  //记录其他符号个数
        }
        //密码长度：
        if (len <= 4) grade += 5;
        else if (5 <= len && 7 >= len) grade += 10;
        else grade += 25;
        //字母：
        if (upralpha + lwralpha == 0) grade += 0;
        else if (upralpha + lwralpha == 1) grade += 10;
        else grade += 20;
        //数字：
        if (digital == 0) grade += 0;
        else if (digital == 1) grade += 10;
        else grade += 20;
        //符号：
        if (other == 0) grade += 0;
        else if (other == 1) grade += 10;
        else grade += 25;
        //奖励：
        if (upralpha + lwralpha == 2 && digital >= 1 && other >= 1) grade += 5;
        else if (upralpha + lwralpha == 1 && digital >= 1 && other >= 1) grade += 3;
        else if (upralpha + lwralpha == 1 && digital >= 1) grade += 2;

        // printf("%d\n",grade);  //测试得分是否计算正确

        if (grade >= 90) printf("VERY_SECURE\n");
        else if (grade >= 80) printf("SECURE\n");
        else if (grade >= 70) printf("VERY_STRONG\n");
        else if (grade >= 60) printf("STRONG\n");
        else if (grade >= 50) printf("AVERAGE\n");
        else if (grade >= 25) printf("WEAK\n");
        else printf("VERY_WEAK\n");
    }
}