题解 | #简单密码# C++硬解

#include<iostream>
#include<string>
using namespace std;
int main()
{
    string str;
    while(cin>>str)
    {
        for(auto &x:str)
        {
            if(x=='a'||x=='b'||x=='c') x='2';
            else if(x=='d'||x=='e'||x=='f') x='3';
            else if(x=='g'||x=='h'||x=='i') x='4';
            else if(x=='j'||x=='k'||x=='l') x='5';
            else if(x=='m'||x=='n'||x=='o') x='6';
            else if(x=='p'||x=='q'||x=='r'||x=='s') x='7';
            else if(x=='t'||x=='u'||x=='v') x='8';
            else if(x=='w'||x=='x'||x=='y'||x=='z') x='9';
            else if(x>='A'&&x<'Z') x=x+('a'-'A')+1;
            else if(x=='Z') x='a';
        }
        cout<<str<<endl;
    }
}