Simple Login with Cpp - Linux y Windows

Login.cpp

#include <iostream>
#include <stdlib.h>
#include <string>
#ifdef WINDOWS
  #include <windows.h>
#else
  // Assume POSIX
  #include <termios.h>
  #include <unistd.h>
#endif

using namespace std;

//hidden passwd
string hiddenPasswd(){
  string psw;
  cin.ignore(100, '\n');
  
  #ifdef WINDOWS
    HANDLE hStdin = GetStdHandle(STD_INPUT_HANDLE); 
    DWORD mode = 0;
    GetConsoleMode(hStdin, &mode);
    SetConsoleMode(hStdin, mode & (~ENABLE_ECHO_INPUT));
  #else
    // Assume POSIX
    termios oldt;
    tcgetattr(STDIN_FILENO, &oldt);
    termios newt = oldt;
    newt.c_lflag &= ~ECHO;
    tcsetattr(STDIN_FILENO, TCSANOW, &newt);
  #endif
  
  getline(cin, psw);
  
  return psw;
}//end hidden passwd

//main
int main() {    
  string username, password;
  cout << "Ingresa el nombre de usuario: ";
  cin >> username;
  cout << "Ingresa su contraseña: ";
  password = hiddenPasswd();

  if (password == "12345") {
    cout << "\nTu passwd: " << password << endl;
  } else {
    cout << "\nError! escribio: " << password << endl;
  }

  return 0;
}// end main