9.237 SELECTED_CHAR_KIND — Choose character kind

Description:

SELECTED_CHAR_KIND(NAME) returns the kind value for the character set named NAME, if a character set with such a name is supported, or -1 otherwise. Currently, supported character sets include “ASCII” and “DEFAULT”, which are equivalent, and “ISO_10646” (Universal Character Set, UCS-4) which is commonly known as Unicode.

Standard:

Fortran 2003 and later

Class:

Transformational function

Syntax:

RESULT = SELECTED_CHAR_KIND(NAME)

Arguments:

NAME	Shall be a scalar and of the default character type.

Example:

program character_kind
  use iso_fortran_env
  implicit none
  integer, parameter :: ascii = selected_char_kind ("ascii")
  integer, parameter :: ucs4  = selected_char_kind ('ISO_10646')

  character(kind=ascii, len=26) :: alphabet
  character(kind=ucs4,  len=30) :: hello_world

  alphabet = ascii_"abcdefghijklmnopqrstuvwxyz"
  hello_world = ucs4_'Hello World and Ni Hao -- ' &
                // char (int (z'4F60'), ucs4)     &
                // char (int (z'597D'), ucs4)

  write (*,*) alphabet

  open (output_unit, encoding='UTF-8')
  write (*,*) trim (hello_world)
end program character_kind