I need help to make this C++ password function more secure and better

Question

const int password = 4321;
void security(int pwd)
{
cout<<"Enter password: ";
cin>>pwd;
if(pwd!=password)
{
cout<<"WRONG PASSWORD\n"; exit(0);
}
}

Answer 1

ask characters using getch() which doesnt display entered character on to screen. everytime u recieve one character, print a *, if user presses back key, print '\b', backspace character.

Answer 2

you could make it in a loop and stop the program if someone tries to enter a wrong password more than 3 times