高中 a022: 迴文

想看題目請點我

#include <iostream>   
using namespace std;  
  
int main() {  
    string s1 ,s2;
    while(cin >> s1 ) {  
        for(int i = 1 ; i <= s1.length() ; i++) { 
            s2 += s1[s1.length()-i] ;
        }
    
        if(s1==s2)
            cout << "yes" << endl ;  
        else  
            cout << "no" << endl ; 
        s2 = "";
    }
    return 0;  
}