isspace - test for a white-space character
int isspace(int c);
The isspace() function tests whether c is a character of class space in the program's current locale, see the Locale specification.
In all cases c is an int, the value of which must be a character representable as an unsigned char or must equal the value of the macro EOF. If the argument has any other value, the behaviour is undefined.
The isspace() function returns non-zero if c is a white-space character; otherwise it returns 0.
No errors are defined.
To ensure applications portability, especially across natural languages, only this function and those listed in the SEE ALSO section should be used for character classification.
isalnum(), isalpha(), iscntrl(), isdigit(), isgraph(), islower(), isprint(), ispunct(), isupper(), isxdigit(), setlocale(), <ctype.h>, the Locale specification.
Derived from Issue 1 of the SVID.