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-
- ctype class string
- ctype determines whether all characters in string are
- of the specified class. It returns 1 if they are all
- of class, and 0 if they are not, or if the string is
- empty. This command also provides another method
- (besides format and scan) of converting between an
- ASCII character and its numeric value. The following
- ctype commands are available:
-
- ctype alnum string
- Tests that all characters are alphabetic or
- numeric characters as defined by the character
- set.
-
- ctype alpha string
- Tests that all characters are alphabetic
- characters as defined by the character set.
-
- ctype ascii string
- Tests that all characters are an ASCII character
- (a non-negative number less than 0200).
-
- ctype char number
- Converts the numeric value, string, to an ASCII
- character. Number must be in the range 0 through
- 255.
-
- ctype cntrl string
- Tests that all characters are ``control
- characters'' as defined by the character set.
-
- ctype digit string
- Tests that all characters are valid decimal
- digits, i.e. 0 through 9.
-
- ctype graph string
- Tests that all characters within are any character
- for which ctype print is true, except for space
- characters.
-
- ctype lower string
- Tests that all characters are lowercase letters as
- defined by the character set.
-
- ctype ord character
- Convert a character into its decimal numeric
- value. The string must be one character long.
-
- ctype space string
- Tests that all characters are either a space,
- horizontal-tab, carriage return, newline,
- vertical-tab, or form-feed.
-
- ctype print string
- Tests that all characters are a space or any
- character for which ctype alnum or ctype punct is
- true or other ``printing character'' as defined by
- the character set.
-
- ctype punct string
- Tests that all characters are made up of any of
- the characters other than the ones for which
- alnum, cntrl, or space is true.
-
- ctype upper string
- Tests that all characters are uppercase letters as
- defined by the character set.
-
- ctype xdigit string
- Tests that all characters are valid hexadecimal
- digits, that is 0 through 9, a through f or A
- through F.
-