C++ 代码
#include<cstdio>
#include<iostream>
#include<cstring>
using namespace std;
int main(){
string s;
getline(cin,s);
for(int i=0;i<s.size();i++){
if(s[i]>='a' && s[i] <='z'){
s[i]='a'+(s[i]-'a'+1)%26;
}
else if(s[i]>='A' && s[i]<='Z'){
s[i]='A'+(s[i]-'A'+1)%26;
}
}
cout<<s;
return 0;
}