![]() Kind, basically, defines internal representation of the type: for the three numeric types, it defines the precision and range, and for the other two, the specifics of storage representation. Each of those types can be additionally characterized by a kind. name added to subprogram END statement andįortran has five intrinsic data types: INTEGER, REAL, COMPLEX, LOGICAL and CHARACTER.'a very long & &string'Ī leading & on the continued line is also required.Īutomatic conversion of source form for existing programs can be carried out by convert.f90. These can be coded using the new free source form which does not require positioning in a rigid column structure: Solve_equation (up to 31 characters, including _)įrom the tokens, statements are built. Tokens that have a syntactic meaning to the compiler are built from those components. the special characters = : + blank - * / ( ).z (which are equivalent outside a character context) ![]() The basic component of the Fortran language is its character set. The convention of writing Fortran keywords in upper case and all other names in lower case is adopted in this article except, by way of contrast, in the input/output descriptions ( Data transfer and Operations on external files). Language elements įortran is case-insensitive. The additional features of Fortran 2003, Fortran 2008 and Fortran 2018 are described by Metcalf, Reid and Cohen. The current standard is Fortran 2018 many of its new features are still being implemented in compilers. Old features that have been superseded by new ones are not described – few of those historic features are used in modern programs although most have been retained in the language to maintain backward compatibility. Included are the additional features of TR-15581:Enhanced Data Type Facilities, which have been universally implemented. This is an overview of Fortran 95 language features. For features of previous versions of the language, see Fortran § Evolution. "Fortran language features" redirects here.
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