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Hi All,

I need a function that when user types a password in the console, the
password should be invisible (e.g. display nothing or display "*"
instead). Just as you can see when you login a machine.

How to implement this? Thanks!
Note: user is typing passord in the console.

wrote:
> I need a function that when user types a password in the console, the
> password should be invisible (e.g. display nothing or display "*"
> instead). Just as you can see when you login a machine.
>
> How to implement this? Thanks!
> Note: user is typing passord in the console.

Your question is answered in the FAQ:

http://www.parashift.com/c++-faq-lit...html#faq-15.18

Best regards,

Tom

wrote:

> Hi All,
>
> I need a function that when user types a password in the console, the
> password should be invisible (e.g. display nothing or display "*"
> instead). Just as you can see when you login a machine.
>
> How to implement this? Thanks!
> Note: user is typing passord in the console.

There is no standard C++ way to do that, because the C++ doesn't define a
console, but rather only an input stream (that may be connected to a
keyboard or not) and some output streams (that may be connected to a
display or not). You will need some platform-specific functions.
Maybe the (n)curses library can help you.

wrote:
> Hi All,
>
> I need a function that when user types a password in the console, the
> password should be invisible (e.g. display nothing or display "*"
> instead). Just as you can see when you login a machine.
>
> How to implement this? Thanks!
> Note: user is typing passord in the console.
>
What consoles do is system dependent. You need to ask
in a group for your operating system (and possibly
windowing system) ... windows, unix, etc...

C++ doesn't address this.

<> wrote in message
news: oups.com...
> Hi All,
>
> I need a function that when user types a password in the console, the
> password should be invisible (e.g. display nothing or display "*"
> instead). Just as you can see when you login a machine.
>
> How to implement this? Thanks!
> Note: user is typing passord in the console.

Use whatever OS specific call you have to read a key from the keyboard. It
is different for each OS. Then get a keypress, and print "*" to the screen.

char Input;
std::string Password;
while ( Input = FunctionToGetKeypress() != 13 ) // 13 is usually enter
{
Password += Input;
std::cout << "*";
cout.flush(); // May or may not be needed
}
std::cout << std::endl;

for Windows it's getch()
Not sure for linux.
check for your OS what function it is to get a single key press.