Write a C++ program to create a new string which is 4 copies of the 2 front characters of a given string. If the given string length is less than 2 return the original string

#include <iostream>
using namespace std;

string test(string str)
        {
             return str.length() < 2 ? str : str.substr(0, 2) + str.substr(0, 2) + str.substr(0, 2)  + str.substr(0, 2); 
        }
        
int main() 
 {
  cout << test("C Sharp") << endl;  
  cout << test("JS") << endl;  
  cout << test("a") << endl;  
  return 0;    
}