题解 | #简单密码#

#include<iostream>
#include<string>

using namespace std;

int main(){

    string str;
    while(cin>>str){

        for(int i=0;i<str.size();i++){
            if(str[i]>='A' && str[i]<'Z'){
                str[i]=tolower(str[i])+1;
                cout<<str[i];
            }
            else if(str[i]=='Z')
                cout<<"a";
            else if(str[i]>='a'&&str[i]<='z'){
                if(str[i]>='a'&&str[i]<='c')
                    cout<<"2";
                else if(str[i]>='d'&&str[i]<='f')
                    cout<<"3";
                else if(str[i]>='g'&&str[i]<='i')
                    cout<<4;
                else if(str[i]>='j'&&str[i]<='l')
                    cout<<5;
                else if(str[i]>='m'&&str[i]<='o')
                    cout<<6;
                else if(str[i]>='p'&&str[i]<='s')
                    cout<<7;
                else if(str[i]>='t'&&str[i]<='v')
                    cout<<8;
                else
                    cout<<9;
            }
            else 
                cout<<str[i];
        }
        cout<<endl;
    }

    return 0;
}