Extract number from string. Post: 302992673

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iswalpha

ISWALPHA(3)						     Linux Programmer's Manual						       ISWALPHA(3)

NAME

       iswalpha - test for alphabetic wide character

SYNOPSIS

       #include <wctype.h>

       int iswalpha(wint_t wc);

DESCRIPTION

       The  iswalpha  function	is the wide-character equivalent of the isalpha function. It tests whether wc is a wide character belonging to the
       wide character class "alpha".

       The wide character class "alpha" is a subclass of the wide character class "alnum", and therefore also a subclass  of  the  wide  character
       class "graph" and of the wide character class "print".

       Being a subclass of the wide character class "print", the wide character class "alpha" is disjoint from the wide character class "cntrl".

       Being  a  subclass  of the wide character class "graph", the wide character class "alpha" is disjoint from the wide character class "space"
       and its subclass "blank".

       Being a subclass of the wide character class "alnum", the wide character class "alpha" is disjoint from the wide character class "punct".

       The wide character class "alpha" is disjoint from the wide character class "digit".

       The wide character class "alpha" contains the wide character classes "upper" and "lower".

       The wide character class "alpha" always contains at least the letters 'A' to 'Z' and 'a' to 'z'.

RETURN VALUE

       The iswalpha function returns non-zero if wc is a wide character belonging to the wide character class "alpha". Otherwise it returns zero.

CONFORMING TO

       ISO/ANSI C, UNIX98

SEE ALSO

       isalpha(3), iswctype(3)

NOTES

       The behaviour of iswalpha depends on the LC_CTYPE category of the current locale.

GNU
								    1999-07-25							       ISWALPHA(3)

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