只有两行的代码

喏：#include<bits/stdc++.h>
using namespace std;int main(){string s;getline(cin,s);int len=s.size();for(int i=0;i<len;i++{if(isalpha(s[i])&&s[i]!='z'){cout << char(s[i]+1);}else if(s[i]=='z'){cout << 'a';}else{cout << s[i];}}return 0;}