| ISSPACE(3) | Library Functions Manual | ISSPACE(3) | 
isspace —
#include <ctype.h>
int
  
  isspace(int
    c);
isspace() function tests for the standard
  white-space characters for which
  isalnum(3) is false. The
  standard white-space characters are the following:
In the ``C'' locale,
    isspace() returns true only for the standard
    white-space characters.
isspace() function returns zero if the character
  tests false and returns non-zero if the character tests true.
isspace() function conforms to ANSI
  X3.159-1989 (“ANSI C89”).
isspace() must be
  EOF or representable as an unsigned
  char; otherwise, the behavior is undefined. See the
  CAVEATS section of
  ctype(3) for more details.
| April 17, 2008 | NetBSD 9.4 |