题解

#include<iostream>
#include<string>
using namespace std;
int main(){
    string a;
    getline(cin,a);
    for(int i=0;i<a.size();i++){
        if(a[i]>='a'&&a[i]<='z'||a[i]>='A'&&a[i]<='Z'){
            if(a[i]=='z'){
                a[i]='a';
                cout<<a[i];
                continue;
            }else if(a[i]=='Z'){
                a[i]='A';
                cout<<a[i];
                continue;
            }
            a[i]++;
        }
        cout<<a[i];
    }
    return 0;
}