Comments on: 13.5 — Stream states and input validation

By: Martin

Martin — Sat, 12 Sep 2009 18:01:43 +0000

Thanks a lot.
Really good article. Except I used
cin.ignore(std::numeric_limits::max(),’\n’);
instead of
cin.ignore(1000, ‘\n’);

I had a problem with two loops because I used clear and ignore at wrong places. So if 123abc was entered, somehow my app just kept silent until I pressed enter. Using your sample code for
“2) If you don’t want this to be valid input, it is not rejected (and you have garbage in your stream).”

fixed my problems and now my integer validation works reliably no matter when and how often I use it.

Thanks.

By: Violator

Violator — Tue, 02 Jun 2009 14:41:56 +0000

And how do you filter out F1 to F12 keys?

[code]
while(i = _getch()) //validating input
{
if(i > '0' && i < '7')
break;
cout << "Wrong number!"; //input isn't valid
}
[/code]

By: sagar

sagar — Tue, 02 Sep 2008 13:12:14 +0000

good program’s.
i want some programs which give from user only digits.something like this.
if u have please send me on my e-mail.

By: Learn C++ - » 13.4 — Stream classes for strings

Learn C++ - » 13.4 — Stream classes for strings — Mon, 05 May 2008 02:33:13 +0000

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