Character Sets

Compaq Fortran supports the following characters:

• The Fortran 95/90 character set which consists of the following:
  
  
  • All uppercase and lowercase letters (A through Z and a through z)
  • The numerals 0 through 9
  • The underscore ( _ )
  • The following special characters:
    
    

  Character	Name	Character	Name
  blank or <Tab>	Blank (space) or tab	:	Colon
  =	Equal sign	!	Exclamation point
  +	Plus sign	"	Quotation mark
  -	Minus sign	%	Percent sign
  *	Asterisk	&	Ampersand
  /	Slash	;	Semicolon
  (	Left parenthesis	<	Less than
  )	Right parenthesis	>	Greater than
  ,	Comma	?	Question mark
  .	Period (decimal point)	$	Dollar sign (currency symbol)
  '	Apostrophe

  
  
  
• Other printable characters

  Printable characters include the tab character (09 hex), ASCII characters with codes in the range 20(hex) through 7E(hex), and characters in certain special character sets.

  Printable characters that are not in the Fortran 95/90 character set can only appear in comments, character constants, Hollerith constants, character string edit descriptors, and input/output records.

Uppercase and lowercase letters are treated as equivalent when used to specify program behavior (except in character constants and Hollerith constants).

For more detailed information on character sets and default character types, see Data Types, Constants, and Variables and Using National Language Support Routines. For more information on the ASCII character set, see ASCII and Key Code Charts.