Visit The New, Modern Unix Linux Community

Linux and UNIX Man Pages

Test Your Knowledge in Computers #738
Difficulty: Medium
RadioShack introduced a 50 MB external hard disk for the TRS-80 Model III/4 in 1983.
True or False?
Linux & Unix Commands - Search Man Pages

isspace(3) [freebsd man page]

ISSPACE(3)						   BSD Library Functions Manual 						ISSPACE(3)

NAME
isspace -- white-space character test LIBRARY
Standard C Library (libc, -lc) SYNOPSIS
#include <ctype.h> int isspace(int c); int isspace_l(int c, locale_t loc); DESCRIPTION
The isspace() function tests for white-space characters. For any locale, this includes the following standard characters: `` '' `` '' ``v'' ``f'' `` '' `` '' In the "C" locale, isspace() returns non-zero for these characters only. The value of the argument must be representable as an unsigned char or the value of EOF. The isspace_l() function takes an explicit locale argument, whereas the isspace() function uses the current global or per-thread locale. RETURN VALUES
The isspace() and isspace_l() functions return zero if the character tests false and return non-zero if the character tests true. COMPATIBILITY
The 4.4BSD extension of accepting arguments outside of the range of the unsigned char type in locales with large character sets is considered obsolete and may not be supported in future releases. The iswspace() function should be used instead. SEE ALSO
ctype(3), iswspace(3), multibyte(3), ascii(7) STANDARDS
The isspace() function conforms to ISO/IEC 9899:1990 (``ISO C90''). The isspace_l() function conforms to IEEE Std 1003.1-2008 (``POSIX.1''). BSD
July 30, 2012 BSD

Check Out this Related Man Page

ISSPACE(3)						   BSD Library Functions Manual 						ISSPACE(3)

NAME
isspace -- white-space character test LIBRARY
Standard C Library (libc, -lc) SYNOPSIS
#include <ctype.h> int isspace(int c); DESCRIPTION
The isspace() function tests for the standard white-space characters for which isalnum(3) is false. The standard white-space characters are the following: ' ' Space character. f Form feed. New-line. Carriage return. Horizontal tab. v And vertical tab. In the ``C'' locale, isspace() returns true only for the standard white-space characters. RETURN VALUES
The isspace() function returns zero if the character tests false and returns non-zero if the character tests true. SEE ALSO
ctype(3), isalnum(3), isalpha(3), isascii(3), isblank(3), iscntrl(3), isdigit(3), isgraph(3), islower(3), isprint(3), ispunct(3), isupper(3), isxdigit(3), stdio(3), toascii(3), tolower(3), toupper(3), ascii(7) STANDARDS
The isspace() function conforms to ANSI X3.159-1989 (``ANSI C89''). CAVEATS
The argument to 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. BSD
April 17, 2008 BSD

Featured Tech Videos