【密码】 （C语言代码）

解题思路:





注意事项:





参考代码:

#include<stdio.h>
#include<string.h>
int main()
{
    int M,a,b,c,d,i,j;
    char str[60],s[7]={'~','!','@','#','$','%','^'};
    scanf("%d",&M);
    getchar();
    while(M--)
    {
        a=b=c=d=0;
        gets(str);
        if(strlen(str)<8||strlen(str)>16)
        {
            printf("NO\n");
        }
        else
        {
            for(i=0;i<strlen(str);i++)
            {
                if(str[i]>='A'&&str[i]<='Z') a=1;
                else if(str[i]>='a'&&str[i]<='z') b=1;
                else if(str[i]>='0'&&str[i]<='9') c=1;
                else
                {
                    for(j=0;j<7;j++)
                    {
                        if(str[i]==s[j])
                        {
                            d=1;
                            break;
                        }
                    }
                }
            }
            if(a+b+c+d>=3) printf("YES\n");
            else printf("NO\n");
        }
    }
    return 0;
}