编写题解 1162: 密码(C++)

解题思路:

注意事项:

参考代码:

#include <iostream>
#include <string>
using namespace std;
int main()
{
    int n,i=0,j,b,c,d,f;
    string a;
    cin>>n;
    while(i<n)
    {
        cin>>a;
        b=c=d=f=0;
        for(j=0;j<a.length();j++)
        {
            if(a[j]>='A'&&a[j]<='Z')
                b=1;
            if(a[j]>='a'&&a[j]<='z')
                c=1;
            if(a[j]>='0'&&a[j]<='9')
                d=1;
            if(a[j]=='~'||a[j]=='!'||a[j]=='@'||a[j]=='#'||a[j]=='$'||a[j]=='%'||a[j]=='^')
                f=1;
        }
        if(b+c+d+f>=3)
            cout<<"YES"<<endl;
        else
            cout<<"NO"<<endl;
        i++;
    }
}