杭电2043

#include<stdio.h>
#include<string.h>
int main()
{
    int m,c,i;
    char s[51];
    while(scanf("%d",&m)!=EOF)
    {
        while(m--)
        {
            int t1=0,t2=0,t3=0,t4=0,sum=0;
            scanf("%s",&s);
            getchar();
            c=strlen(s);
            if(c<=50)
            {
            for(i=0;i<c;i++)
            {
                if(s[i]>='A'&&s[i]<='Z')
                t1=1;
                if(s[i]>='a'&&s[i]<='z')
                t2=1;
                 if(s[i]>='0'&&s[i]<='9')
                t3=1;
                if(s[i]==126 ||s[i]==33 ||s[i]==64 ||s[i]==35 ||s[i]==36 ||s[i]==37 ||s[i]==94)
                t4=1;
            }
            sum=t1+t2+t3+t4;
            if(sum>=3&&c>=8&&c<=16)
                printf("YES
");
            else
                printf("NO
");
            }
            else
                break;
        }

    }

}

注意最后记得判断密码的长度是不是在8和16之间，仔细