两种方法

#include<bits/stdc++.h>
using namespace std;
string s,s1;
int main(){

	getline(cin,s);
	int len = s.size();
	for(int i=0;i<=len-1;++i)
	{
		if(s[i]=='z') s[i]='a';
		else if(s[i]>='a' and s[i]<='y')  s[i]+=1;
	}
	cout<<s;
	return 0;
}

```cpp
#include<bits/stdc++.h>
using namespace std;
string s,s1;
int main(){
	cin>>s;
	s1 = s;
	reverse(s.begin(),s.end());
	if(s==s1)	cout<<"Yes";
	else cout<<"No";
	return 0;
}