ctype man page on UNIXv7

ctype man page on UNIXv7

Man page or keyword search:
man Server 300 pages
apropos Keyword Search (all sections)
Output format

CTYPE(3)							      CTYPE(3)

NAME
       isalpha, isupper, islower, isdigit, isalnum, isspace, ispunct, isprint,
       iscntrl, isascii - character classification

SYNOPSIS
       #include <ctype.h>

       isalpha(c)

       . . .

DESCRIPTION
       These macros classify ASCII-coded integer values by table lookup.  Each
       is  a predicate returning nonzero for true, zero for false.  Isascii is
       defined on all integer values; the rest are defined only where  isascii
       is true and on the single non-ASCII value EOF (see stdio(3)).

       isalpha	      c is a letter

       isupper	      c is an upper case letter

       islower	      c is a lower case letter

       isdigit	      c is a digit

       isalnum	      c is an alphanumeric character

       isspace	      c is a space, tab, carriage return, newline, or formfeed

       ispunct	      c	 is  a	punctuation  character	(neither  control  nor
		      alphanumeric)

       isprint	      c is a printing character, code 040(8)  (space)  through
		      0176 (tilde)

       iscntrl	      c is a delete character (0177) or ordinary control char‐
		      acter (less than 040).

       isascii	      c is an ASCII character, code less than 0200

SEE ALSO
       ascii(7)

								      CTYPE(3)

[top]

List of man pages available for UNIXv7

Copyright (c) for man pages and the logo by the respective OS vendor.

For those who want to learn more, the polarhome community provides shell access and support.

[legal] [privacy] [GNU] [policy] [cookies] [netiquette] [sponsors] [FAQ]

Polarhome, production since 1999.
Member of Polarhome portal.
Based on Fawad Halim's script.
....................................................................

Vote for polarhome