 |  |  |  |  |  |  |  |
check number is string
Please support our C advertiser: Programming Forums - DaniWeb Sister Site
 |
how to check there exist number in string using isalpha.if number exist, display "only alphabetic,please input again"
example :
user input = i had to 2 number
example :
user input = i had to 2 number
Is it really that hard?
I don't know if that takes a string or not, but if it's only a character then just loop through.
C Syntax (Toggle Plain Text)
I don't know if that takes a string or not, but if it's only a character then just loop through.
•
•
Join Date: Aug 2005
Posts: 15,660
Reputation: 
Solved Threads: 1500
If isalpha() failes it does not mean that the character is a numeric digit, it could be anything else too. If you want to check for numeric digits then use isdigit(). And both only check one character, so if you have a whole string then you must check each character individually.
|
Similar Threads
- Best Way to Check for same Word in string? (Java)
- Number Checking string input in Delphi? (Pascal and Delphi)
- Number To String Conversion (PHP)
- Finding the first number char in a string (Java)
Other Threads in the C Forum
- Previous Thread: C Tutorial
- Next Thread: function passing variables
Views: 6570 | Replies: 3
| Thread Tools | Search this Thread |
Latest C Posts
- Today's Posts
- Unanswered Threads
Related Forum Features
Tag cloud for C
adobe ansi api array arrays bash binarysearch centimeter char convert copyanyfile copypdffile cprogramme createcopyoffile createprocess() csyntax directory drawing dynamic executable fflush file floatingpointvalidation fork frequency getlasterror getlogicaldrivestrin givemetehcodez global graphics gtkgcurlcompiling hardware highest homework i/o ide inches infiniteloop initialization interest kilometer lazy linked linkedlist linux linuxsegmentationfault list logical_drives match matrix meter microsoft motherboard multi mysql open opendocumentformat openwebfoundation pattern pause pdf pointer pointers posix power problem program programming pyramidusingturboccodes read recursion recv repetition scanf scheduling segmentationfault send shape single socketprograming socketprogramming spoonfeeding stack standard strchr string strings structures student suggestions system test testautomation unix urboc user voidmain() win32 win32api windows.h
