If I want to "press any key to continue" in Windows, I can use getch()
But the getch() isn't a standard C function
So what should I to do in Linux?
Jun 27 '08
16  3454 
Keith Thompson <ks***@mib.orgw rote in message
news:ln******** ****@nuthaus.mi b.org...
If you'll settle for requiring the user to press <return(or <enter>,
or whatever you want to call it), you can have a loop that reads and
discards characters until it sees a '\n' (or EOF).
Yes, and you could call that "loop" "gets()" or "fgets()".. .
Sheesh...things are getting progressively worse around here...
---
William Ernest Reid
"Bill Reid" <ho********@hap pyhealthy.netwr ites:
Keith Thompson <ks***@mib.orgw rote in message
news:ln******** ****@nuthaus.mi b.org...
>If you'll settle for requiring the user to press <return(or <enter>,
or whatever you want to call it), you can have a loop that reads and
discards characters until it sees a '\n' (or EOF).
Yes, and you could call that "loop" "gets()" or "fgets()".. .
Sheesh...things are getting progressively worse around here...
Neither gets() nor fgets() solves the problem.
fgets() requires an argument specifying the maximum input length. If
the input line exceeds that length, fgets() returns before reading the
new-line; if stdin is line-buffered, additional characters will be
left on the input stream, waiting to be read by the next input
operation. It also requires a pointer to storage for a sequence of
characters that are going to be discarded anyway.
gets() is inherently dangerous, and should never be used.
--
Keith Thompson (The_Other_Keit h) ks***@mib.org <http://www.ghoti.net/~kst>
Nokia
"We must do something. This is something. Therefore, we must do this."
-- Antony Jay and Jonathan Lynn, "Yes Minister"
Keith Thompson <ks***@mib.orgw rote in message
news:ln******** ****@nuthaus.mi b.org...
"Bill Reid" <ho********@hap pyhealthy.netwr ites:
Keith Thompson <ks***@mib.orgw rote in message
news:ln******** ****@nuthaus.mi b.org...
If you'll settle for requiring the user to press <return(or <enter>,
or whatever you want to call it), you can have a loop that reads and
discards characters until it sees a '\n' (or EOF).
Yes, and you could call that "loop" "gets()" or "fgets()".. .
Sheesh...things are getting progressively worse around here...
Neither gets() nor fgets() solves the problem.
fgets() requires an argument specifying the maximum input length. If
the input line exceeds that length, fgets() returns before reading the
new-line; if stdin is line-buffered, additional characters will be
left on the input stream, waiting to be read by the next input
operation. It also requires a pointer to storage for a sequence of
characters that are going to be discarded anyway.
gets() is inherently dangerous, and should never be used.
I said it before and I'll say it again...sheesh. ..
Use fgets() with say a 512-byte static buffer you keep in a library just
for crap like this, and specifically instruct the user to press RETURN,
and of course you'll still find something to whine about, but in essence
all you're doing is using the "event loop" of fgets() to break out of the
loop and "continue", which is what the OP wanted to do, which is simple
to do, but for some strange reason is IMPOSSIBLE to do here in the
well-padded confines of this newsgroup...
I mean, this is just a step ahead (or below!) the "hello world" level
of programming, but SHEEEEEEESH...i t's beyond the newsgroup
"regulars"...an d yes I've said it before, but it is beyond me how anybody
with that kind of attitude could ever manage to write any useful
computer code in their life...
---
William Ernest Reid
On Jun 13, 3:34 am, "Bill Reid" <hormelf...@hap pyhealthy.netwr ote:
....snip...
>
Use fgets() with say a 512-byte static buffer you keep in a library just
for crap like this, and specifically instruct the user to press RETURN,
Spectacular security tips there! (no, not really) vi******@gmail. com wrote:
On Jun 13, 3:34 am, "Bill Reid" <hormelf...@hap pyhealthy.netwr ote:
...snip...
>>
Use fgets() with say a 512-byte static buffer you keep in a library
just for crap like this, and specifically instruct the user to press
RETURN,
Spectacular security tips there! (no, not really)
Remember. Bill has vociferously argued that it's not worth checking
input for end-of-file conditions.
santosh <sa*********@gm ail.comwrote in message
news:g2******** **@registered.m otzarella.org.. .
vi******@gmail. com wrote:
On Jun 13, 3:34 am, "Bill Reid" <hormelf...@hap pyhealthy.netwr ote:
...snip...
>
Use fgets() with say a 512-byte static buffer you keep in a library
just for crap like this, and specifically instruct the user to press
RETURN,
Spectacular security tips there! (no, not really)
Remember. Bill has vociferously argued that it's not worth checking
input for end-of-file conditions.
Nope, I didn't argue "vociferous ly" about that...what I HAVE said
is that it NEVER ends with you loons; if I checked for end-of-file, you'd
find some other apocalyptic event to whine about...
If only I could stop your incessant trolling as easily as just pressing
RETURN...
---
William Ernest Reid
Keith Thompson wrote:
Eric Sosman <es*****@ieee-dot-org.invalidwrit es:
>fuzhen wrote:
>>If I want to "press any key to continue" in Windows, I can use getch()
But the getch() isn't a standard C function
So what should I to do in Linux?
"Press any key other than the one you will press next."
"Press ENTER" is also a candidate.
"Press any key to continue. Press any other key to quit."
This program broke my computer.!!!!
I've pressed the caps lock, the shift, the alt, and the control keys.
Then I tried the num-lock, the print-screen, and the pause buttons.
Nothing happens! You have totally destroyed my computer!
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by: Shugong Wang |
last post by:
getch() function is not a standard C/C++ function. Thought gcc provieds
ncurses.h and a getch() function is realized, I still want to know how to
realize a getch() function in standard c or c++.
|
by: aurgathor |
last post by:
Howdy,
What would be the equivalent of getch() using iostream?
My current code is:
cout << "\nPress <Enter> to continue...";
getch();
but <conio.h> is not kosher for the C++ class.
|
by: Crow |
last post by:
Is there any way to make cin behave like getch()? Specifically,
getch() returns immediately after a key is pressed and the cin family
of input methods seem to block until a new line is encountered. I need
some help.
|
by: Ratheesh Kumar |
last post by:
My doubt is on the working of getch() function based on the following observations
1) if the pressed key has an ascii code,only that can be read using a single call to getch()
2) if the key has not an ascii code then the first call to getch() returns a zero and ,if we made a second call, it will return the scan code with out an additional key press.
Some one please help me to understand getch()
|
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In the following code something strange happens ! If I keep pressed any
of ALT+Arrow, keys, they are extracted two times from buffer then getch
seems to stop; if I release and press again ALT+arrow nothing changes:
the only way to exit from this condition is press another key a single
time.
What seems to happen is that kbhit say some keys are present in buffer
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If I...
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by: mdh |
last post by:
I am just trying to figure out if this is intended behavior, or whether
I am missing something...(probably the latter).
The example given (p96, K&R) is meant to illustrate pointer behavior.
K&R say the example "break(s) a stream of characters into integer
values"
The relevant code is: ( I think)
|
by: Sankar |
last post by:
Dear all,
In my programming snippet compiled in Linux 2.6, I have a getch() ,
but the program when executed does not wait for my input..
fflush(stdin), fflush(stdout) - All these did not help.
I would appreciate if somone suggests me proven solution to this.
thanks in advance
Sankar
|
by: Michele 'xjp' |
last post by:
Hi there,
I am using a POSIX-compliant system, Cygwin on Windows.
I need the features of conio.h's getch() and clrscr(), but I can't
compile programs with #include <conio.h(since conio.h is NOT POSIX).
I tried to implement myself clrscr() with system("cls"), but the program
compiles ok, but during the running it will show:
sh: cls: command not found
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Hi
In my college they have given me the following codings for implementing linker function.
Codings:
#include<stdio.h>
#include<conio.h>
void cursoron();
void cursoroff();
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