escribir contraseña en el prompt de linux

#include <iostream>
#include <string>
using namespace std;

int main ()
{
  string password = "1234";
  string input;
  cout << "Enter your password > " << flush;
  cin >> input;
  
  if (input == password) {
    cout << "password correct." << endl;
  }
  
  if (input != password) {
    cout << "password incorrect." << endl;
  }
  return 0;
}