How do you mask a character the user types in to something like this '*' in C?
Let's say that you typed in 'a', but it would show up as '*'.  How would you do
that?

--

I believe we can change anything.
I believe in my dream.
    - Joe Satriani

:
:>How do you mask a character the user types in to something like this '*' in
C?
:>Let's say that you typed in 'a', but it would show up as '*'.  How would you
do
:>that?
:
:   In Borland C you can use the 'getch' function to get a character
:from the keyboard without echoing it to the screen.  Each time getch
:gets a keyboard character then output  a '*' to the screen for example
:using the 'putch' function. If this is for password entry then you
:will probbaly need to handle  a few typed characters like backspace,
:carriage return etc separately so that the password entry can be
:edited by a user.  I think these are all standard functions in the
:console i/o library.
============
On the contrary, all of these are non-standard functions in the
non-standard <conio.h> header and associated libraries.
They do not belong in comp.lang.c
============
:
:

  Get user input with getch() and process each character with
switch(). Then add followings inside the switch();

    if user input an alpha-numeric  character, print an '*' on screen.
    if user press "backspace", delete an '*' on the screen.

To learn more about "getch()", consult your compiler's help.

:
:>How do you mask a character the user types in to something like this '*' in
C?
:>Let's say that you typed in 'a', but it would show up as '*'.  How would you
do
:>that?
:
:Why don't you use "getch()"
:getch() will not show anything while getting user input.
:So all you have to do is:
==========
Why don't you get the FAQ from ftp://rtfm.mit.edu/pub/usenet-by-group
and read it.  Then your postings will show less flammage and
you will do less damage.
==========
:
:  Get user input with getch() and process each character with
:switch(). Then add followings inside the switch();
:
:    if user input an alpha-numeric  character, print an '*' on screen.
:    if user press "backspace", delete an '*' on the screen.
:
:To learn more about "getch()", consult your compiler's help.
:
:

    case 'a':
    case 'b':
    case 'c':
    case 'd':
    ...
    case '0':
    case '1':
    ...
    etc., etc.

?

There's a perfectly good function called isalnum() which will tell you
if a character is alpha-numeric or not.  It will most likely be faster,
smaller, and more portable than anything you can write.

--

I believe we can change anything.
I believe in my dream.
    - Joe Satriani

--
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