Character types - Dev Shed

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June 9th, 2003, 07:51 AM

Nille

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Join Date: May 2003

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Character types

Hi,
I'm looking for some C equavilents to these java functions:

Code:

char c = someChar;
boolean isWhitespace = Character.isWhitespace(c);
boolean isDigit = Character.isDigit(c);
boolean isLetter = Character.isLetter(c);
boolean isLetterOrDigit = Character.isLetterOrDigit(c);

or something like this (even better):

Code:

switch(GetType(c))
{
   case WHITESPACE:
      break;
   case LETTER:
      break;
   //etc...
}

Are there any?

Thanks in advance,
Nille

June 9th, 2003, 09:58 AM

dwise1_aol

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Look in ctype.h :

isalpha()
isalnum()
isdigit()
islower()
isupper()
isspace()
isxdigit()
iscntrl()
etc.

June 9th, 2003, 12:24 PM

DJ911

Registered User

Join Date: Jun 2003

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yep use ctype.h header file for that macros
use this sample program

#include<ctype.h>
main()
{
int ch;

while((ch=getch()) != 'q')
{
if(isalpha(ch))
printf("Alphabet\n");
if(isdigit(ch))
printf("Number\n");
}
}

June 9th, 2003, 12:46 PM

Nille

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Thanks both of you!

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