stupid question about ascii characters

jalburger · #1 (**permalink**) 09-28-2004

i know it's out there, but I cannot remember how to check if a given ascii character string contains all digits or not ... any ideas?

ie...function("123") --> OK
function("NOT_A_NUMBER") --> returns error

thanks!!

Perderabo · #2 (**permalink**) 09-28-2004

isdigit will test a single character. I guess you could try strtol on the string and see what happens. Or maybe strspn() with a second string of "0123456789"? I don't think there is a function that does precisely what you want. Of course, it would be a snap to write one.

jalburger · #3 (**permalink**) 09-28-2004

i think isdigit() was the function I was trying to remember (though it doesn't work completely the way I described)

thanks!!

More UNIX and Linux Forum Topics You Might Find Helpful
Thread	Thread Starter	Forum	Replies	Last Post
c language + simple question regarding memory addresses and ASCII characters	JamesGoh	High Level Programming	7	01-30-2008 04:00 PM
Weird Ascii characters in file names	yamsin789	Shell Programming and Scripting	2	10-07-2007 11:27 AM
Multibyte characters to ASCII	jerardfjay	Shell Programming and Scripting	8	11-18-2005 02:45 AM
Hex characters of ascii file	budrito	HP-UX	2	08-10-2005 11:26 PM
Replace characters in a string using their ascii value	roops	Shell Programming and Scripting	2	03-04-2005 01:51 AM

Thread Tools	Search this Thread
Show Printable Version Email this Page	Search this Thread: Advanced Search
Display Modes	Rate This Thread
Switch to Linear Mode Hybrid Mode Switch to Threaded Mode	Rate This Thread:


	Powered by