isspace, iswspace, _ismbcspace

De RAD Studio
Aller à : navigation, rechercher

Remonter à Ctype.h - Index


Header File

ctype.h, wctype.h, mbstring.h

Category

Classification Routines

Prototype

int isspace(int c);

int iswspace(wint_t c);

int _ismbcspace(unsigned int c);

Description

Tests for space character.

isspace is a macro that classifies ASCII-coded integer values by table lookup. The macro is affected by the current locale’s LC_CTYPE category.

You can make this macro available as a function by undefining (#undef) it.

Return Value

isspace returns nonzero if c is a space, tab, carriage return, new line, vertical tab, formfeed (0x09 to 0x0D, 0x20), or any other locale-defined space character.

Example



 #include <stdio.h>
 #include <ctype.h>
 int main(void)
 {
   char c = 'C';
   if (isspace(c))
     printf("%c is white space\n",c);
   else
     printf("%c is not white space\n",c);
   return 0;
 }



Portability



POSIX Win32 ANSI C ANSI C++

isspace

+

+

+

+

_ismbcspace

+

iswspace

+

+

+