What is Fortran 77 used for?

FORTRAN77 is a version of the general-purpose imperative programming language FORTRAN. It is the successor of FORTRAN 66 and was proposed in 1977. FORTRAN77 addressed many key shortcomings of FORTRAN66 and added significant features to the programming language.

How do you define a global variable in Fortran 90?

Global variables are defined in Fortran using: using a common block (a F77 construct), or. using a module….In the module, you can specify zero or more definitions for:

types.
constants.
variables.
declarations and.
(module) procedures.

What is module procedure?

A MODULE PROCEDURE statement is the first statement of a separate module subprogram.

What are procedures in Fortran?

A procedure is a group of statements that perform a well-defined task and can be invoked from your program. Information (or data) is passed to the calling program, to the procedure as arguments.

What is the most commonly used version of Fortran?

Fortran 77
The most common Fortran version today is still Fortran 77, although Fortran 90 is growing in popularity. Fortran 95 is a revised version of Fortran 90 which (as of early 1996) is expected to be approved by ANSI soon. There are also several versions of Fortran aimed at parallel computers.

What is a common block in FORTRAN?

The COMMON statement defines a block of main memory storage so that different program units can share the same data without using arguments.

What is a module in FORTRAN?

Advertisements. A module is like a package where you can keep your functions and subroutines, in case you are writing a very big program, or your functions or subroutines can be used in more than one program. Modules provide you a way of splitting your programs between multiple files.

What are Fortran modules?

What is Fortran interface?

Statement Purpose The interface block is a powerful structure that was introduced in FORTRAN 90. When used, it gives a calling procedure the full knowledge of the types and characteristics of the dummy arguments that are used inside of the procedure that it references.