Re: error checking of user input

•

What is DaniWeb IT Discussion Community?

You're currently browsing the C++ section within the Software Development category of DaniWeb, a massive community of 429,867 software developers, web developers, Internet marketers, and tech gurus who are all enthusiastic about making contacts, networking, and learning from each other. In fact, there are 2,445 IT professionals currently interacting right now! Registration is free, only takes a minute and lets you enjoy all of the interactive features of the site.

Join our community!

Please support our C++ advertiser: Programming Forums

error checking of user input

•

Join Date: Sep 2004

Posts: 6,355

Reputation: Narue has much to be proud of

Rep Power: 29

Solved Threads: 466

Narue

Offline

Expert Meanie

Re: error checking of user input

Apr 16th, 2005

>not equal to NULL
'\0' and NULL should not be mixed. If you do so it makes your code harder to follow. '\0' is the null character and should only be used in character context, and NULL is the null pointer and should only be used in pointer context.

>if(player_name != '\0')
If you're checking to see if the input is numeric then this doesn't do what you think it does. It checks pointer_name to see if it's a null pointer. However, if it were a null pointer, the program would have crashed here:

Help with Code Tags

(Toggle Plain Text)

cin.getline(player_name, 50);

You've replaced one broken construct that doesn't do what you want with another broken construct that doesn't do what you want.

I'm a programmer. My attitude starts with arrogance, holds steady at condescension, and ends with hostility. Get used to it.

DaniWeb Home > Forums > Software Development > C++ > error checking of user...

Re: error checking of user input

error checking of user input

Re: error checking of user input