How to quit using 'Enter'. Advise please...

[jelly]

Hello All
Part of the code I am working on requires that a loop exits upon the 'ENTER'
key being pressed.
I would have thought its possible by doing something like the following:

while(input != '\n')
...do something;

I tried this but it obviously does not work. So it seems I must use the
Ascii
value of 'ENTER' key to quit in the while loop. How do i do this? Thanks
much.

[Kevin Goodsell]

Re: How to quit using 'Enter'. Advise please...

jelly wrote:
[color=blue]
> Hello All
> Part of the code I am working on requires that a loop exits upon the 'ENTER'
> key being pressed.
> I would have thought its possible by doing something like the following:
>
> while(input != '\n')
> ...do something;
>
> I tried this but it obviously does not work. So it seems I must use the
> Ascii
> value of 'ENTER' key to quit in the while loop. How do i do this? Thanks
> much.
>
>[/color]

It has nothing to do with ASCII. ASCII is not required to be supported
in any way by a C++ implementation. We need real code to tell you what's
wrong.

http://www.parashift.com/c++-faq-lite/how-to-post.html#faq-5.8

-Kevin
--
My email address is valid, but changes periodically.
To contact me please use the address from a recent posting.

[Mike Wahler]

Re: How to quit using 'Enter'. Advise please...


"jelly" <jelly@yahoo.co m> wrote in message
news:Mnofb.7190 $sr1.620@newssv r29.news.prodig y.com...[color=blue]
> Hello All
> Part of the code I am working on requires that a loop exits upon the[/color]
'ENTER'[color=blue]
> key being pressed.
> I would have thought its possible by doing something like the following:
>
> while(input != '\n')
> ...do something;
>
> I tried this but it obviously does not work. So it seems I must use the
> Ascii
> value of 'ENTER' key to quit in the while loop. How do i do this? Thanks
> much.[/color]

We cannot diagnose code we cannot see.
However, here is one of many possible approaches:

std::string& getinput()
{
static std::string s;
std::getline(st d::cin, s);
}

while(!getinput ().empty())
{
/* whatever */
}

-Mike

[Jelly]

Re: How to quit using 'Enter'. Advise please...

Thanks guys. I did not post the whole code because in the past I have been
told to only post the specific piece ie the while loop.

Thanks again.


"Mike Wahler" <mkwahler@mkwah ler.net> wrote in message
news:Unpfb.581$ Qy2.528@newsrea d4.news.pas.ear thlink.net...[color=blue]
>
> "jelly" <jelly@yahoo.co m> wrote in message
> news:Mnofb.7190 $sr1.620@newssv r29.news.prodig y.com...[color=green]
> > Hello All
> > Part of the code I am working on requires that a loop exits upon the[/color]
> 'ENTER'[color=green]
> > key being pressed.
> > I would have thought its possible by doing something like the following:
> >
> > while(input != '\n')
> > ...do something;
> >
> > I tried this but it obviously does not work. So it seems I must use the
> > Ascii
> > value of 'ENTER' key to quit in the while loop. How do i do this? Thanks
> > much.[/color]
>
> We cannot diagnose code we cannot see.
> However, here is one of many possible approaches:
>
> std::string& getinput()
> {
> static std::string s;
> std::getline(st d::cin, s);
> }
>
> while(!getinput ().empty())
> {
> /* whatever */
> }
>
> -Mike
>
>
>[/color]

[Mike Wahler]

Re: How to quit using 'Enter'. Advise please...


"Jelly" <Jelly@yahoo.co m> wrote in message
news:YsFfb.7349 $Su1.5273@newss vr29.news.prodi gy.com...[color=blue]
> Thanks guys. I did not post the whole code because in the past I have been
> told to only post the specific piece ie the while loop.[/color]

[Please don't top-post.]

When asking a question about your code, you need to post
enough of it to provide sufficient context to those reading.

All you originally posted was:

while(input != '\n')
...do something;

... which could only be answered if context were provided.

A better code fragment would have been a complete small
program which showed how/where the 'input' was obtained,
what the type of 'input' is, how you attempted to evaluate
and act upon it, etc.

-Mike