Write a C++ program to concat two given string of length atleast 1, after removing their first character

#include <iostream>
using namespace std;

string test(string s1, string s2)
         {
             return s1.substr(1) + s2.substr(1);
         }
         
int main() 
 {
  cout << test("Hello", "Hi") << endl;  
  cout << test("JS", "Python") << endl; 
  return 0;    
}