isspace, iswspace, _ismbcspace
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 |
+ |
+ |
+ |