```

import java.io.BufferedReader;

import java.io.InputStreamReader;

import java.util.Scanner;

import java.io.*;

class GFG {

    public static void main(String[] args)

    {

            Scanner s = new Scanner(System.in);

            String preString = "hello, ";

            String name = s.next();

            String result = preString.concat(name);

            System.out.println(result);

    }

}

```

```

#include <iostream>

using namespace std;

int main ()

{

string word;

while (cin>>word)

 cout<<"hello, "<< word <<endl;

return 0;

}

```