Re: never ending loop
Next message: Jack Klein: "Re: Read single char from input including the whitespace"
Date: Wed, 29 Oct 2003 00:02:55 +0100
"Josh Sebastian" <curien@cox.net> wrote in message
news:pan.2003.10.28.22.55.25.408819@cox.net...
> On Tue, 28 Oct 2003 23:22:34 +0100, J.P. wrote:
>
> >
> > "Artie Gold" <artiegold@austin.rr.com> wrote in message
> > news:3F9EE4D1.6030600@austin.rr.com...
> > <Some code>
> >
> >> See:
> >>
> >> http://www.parashift.com/c++-faq-lite/input-output.html#faq-15.2
> >>
> >> (you must have missed it when you read the C++ FAQ before posting)
> >
> > Thanks for the link, but I hate the solution (reading a variable in the
> > 'while'). I will read faq-15.3.
>
> Reading it in the while is idiomatic (meaning it's what C++ programmers
> are used to seeing), so using a different technique may reduce the
> readability of your code. But in any case, all it does is avoid repeated
> code. The technique is generally called a "priming read", and I first
> learned to do it in Pascal. Without the idiom, it looks like
>
> cin >> x;
> while(!cin.good()) {
> cin.ignore(...);
> cin.clear();
> cin >> x;
> }
>
> You see how we had to write cin >> x twice? Putting it in the while avoids
> that, and that's a Good Thing(tm).
Yes, I see. Still hate it for now. It will probably change when I do this
more often. My programming-teacher at school would have killed me if I did
this in Modula-2.
--
J.P.
Next message: Jack Klein: "Re: Read single char from input including the whitespace"
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