Programming Forums > Application Development > C++

Intimidat0r · Sep 2nd, 2005, 9:35 PM

how can you make it so that in c++ when the user inputs stuff through cin it comes up as * instead of the actual text theyre typing? im trying to make a password thing.

Intimidat0r · Sep 2nd, 2005, 10:24 PM

oh im sorry never mind. somebody delete this thread.

Ooble · Sep 3rd, 2005, 6:57 AM

Well, did you figure it out?

Riddle · Sep 3rd, 2005, 9:01 AM

I'm pretty sure you can delete your own threads, if you've been the only one to post thus far (which you were).

Ooble · Sep 3rd, 2005, 10:16 AM

Yeah, but you only get half an hour.

Brent · Sep 3rd, 2005, 12:58 PM

...but how do you mask input text?

Ooble · Sep 3rd, 2005, 1:38 PM

You'd have to use the getch() function. What compiler and what OS are you using? It's different for each one.

Brent · Sep 3rd, 2005, 5:35 PM

i have a digital mars compiler on windows. how would i use getch to do this, could you give em an example?

Ooble · Sep 3rd, 2005, 7:20 PM

First off, you have to include conio.h if you're using C, or cconio if you're using C++:

(Toggle Plain Text)

#include <cconio>

Then you can call the getch() function. It returns a character as soon as it is typed, and doesn't echo it to the screen. It's sister function, getche(), does. If you're using C++, they're in the std namespace. I think.

(Toggle Plain Text)

char c;
c = std::getch();
printf("*");

Note that any buffering and backspace-handling is left entirely up to the programmer when using this function. Oh, and by the way, using conio.h/cconio renders your program unportable.

2roll4life7 · Sep 3rd, 2005, 8:18 PM

I've seen portable ways of doing this in C and Java. I know there is one posted on the java.sun.com forums somewhere, sorry I don't have the link. And also, the prototype of this function is declared as returning an int.

Sep 2nd, 2005, 9:35 PM	#1
Intimidat0r Hobbyist Programmer Join Date: May 2005 Location: Don't know, but the padded walls are a nice touch. Posts: 126 Rep Power: 0	masked input in c++ how can you make it so that in c++ when the user inputs stuff through cin it comes up as * instead of the actual text theyre typing? im trying to make a password thing. __________________ Children in the dark cause accidents, and accidents in the dark cause children. http://www.ronincoders.org

Sep 2nd, 2005, 10:24 PM	#2
Intimidat0r Hobbyist Programmer Join Date: May 2005 Location: Don't know, but the padded walls are a nice touch. Posts: 126 Rep Power: 0	oh im sorry never mind. somebody delete this thread. __________________ Children in the dark cause accidents, and accidents in the dark cause children. http://www.ronincoders.org

Sep 3rd, 2005, 6:57 AM	#3
Ooble I eat cake for breakfast. Join Date: Jul 2004 Location: In my box. Posts: 4,434 Rep Power: 9	Well, did you figure it out? __________________ Me :: You :: Them

Sep 3rd, 2005, 10:16 AM	#5
Ooble I eat cake for breakfast. Join Date: Jul 2004 Location: In my box. Posts: 4,434 Rep Power: 9	Yeah, but you only get half an hour. __________________ Me :: You :: Them

Sep 3rd, 2005, 1:38 PM	#7
Ooble I eat cake for breakfast. Join Date: Jul 2004 Location: In my box. Posts: 4,434 Rep Power: 9	You'd have to use the getch() function. What compiler and what OS are you using? It's different for each one. __________________ Me :: You :: Them

Sep 3rd, 2005, 9:01 AM	#4
Riddle Programmer Join Date: May 2005 Location: Nar Shaddaa Posts: 42 Rep Power: 0	I'm pretty sure you can delete your own threads, if you've been the only one to post thus far (which you were).

Sep 3rd, 2005, 12:58 PM	#6
Brent Highly Adaptive Penguin Join Date: May 2005 Location: United States Posts: 251 Rep Power: 4	...but how do you mask input text?

Sep 3rd, 2005, 5:35 PM	#8
Brent Highly Adaptive Penguin Join Date: May 2005 Location: United States Posts: 251 Rep Power: 4	i have a digital mars compiler on windows. how would i use getch to do this, could you give em an example?

Sep 3rd, 2005, 7:20 PM	#9
Ooble I eat cake for breakfast. Join Date: Jul 2004 Location: In my box. Posts: 4,434 Rep Power: 9	First off, you have to include conio.h if you're using C, or cconio if you're using C++: (Toggle Plain Text) #include <cconio> #include <cconio> Then you can call the getch() function. It returns a character as soon as it is typed, and doesn't echo it to the screen. It's sister function, getche(), does. If you're using C++, they're in the std namespace. I think. (Toggle Plain Text) char c; c = std::getch(); printf(""); char c; c = std::getch(); printf(""); Note that any buffering and backspace-handling is left entirely up to the programmer when using this function. Oh, and by the way, using conio.h/cconio renders your program unportable. __________________ Me :: You :: Them

Sep 3rd, 2005, 8:18 PM	#10
2roll4life7 Programmer Join Date: Aug 2005 Location: 0x0010 * 0x0091 + 0x0004 Posts: 65 Rep Power: 4	I've seen portable ways of doing this in C and Java. I know there is one posted on the java.sun.com forums somewhere, sorry I don't have the link. And also, the prototype of this function is declared as returning an int. __________________ (Toggle Plain Text) #if 0 /* in case someone actually tries to compile this / #if 0 / in case someone actually tries to compile this */ - libpng version 1.2.8 (example.c) <Jim_McNeat> Is there like a way to put a compiler in "Just trust me on that one" mode?

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)

Thread Tools
Show Printable Version Email this Page
Display Modes
Linear Mode Switch to Hybrid Mode Switch to Threaded Mode

Programming Forums > Application Development > C++

masked input in c++