题解 | #字符逆序#

#include<iostream>
using namespace std;
int main()
{
    string str;
    while(getline(cin,str))
    {
        int len=str.length()-1;
        int i=0;
        string res;
        while(len>=0)
        {
            res.push_back(str[len--]);
        }
        cout<<res<<endl;
    }
    return 0;
}