Reading and Writing Files in FORTRAN90

F90_FILES is a directory of F90 programs which illustrate the use of files.


The computer code and data files made available on this web page are distributed under the GNU LGPL license.


A version of F90_FILES is available in a C version and a C++ version and a FORTRAN90 version.

Related Data and Programs:

F90, FORTRAN90 programs which illustrate some of the features of the FORTRAN90 programming language.

FILUM, a FORTRAN90 library which can work with information in text files.

TABLE_IO, a FORTRAN90 library which reads and writes table files.


  1. Jeanne Adams, Walter Brainerd, Jeanne Martin, Brian Smith, Jerrold Wagener,
    Fortran90 Handbook,
    Complete ANSI/ISO Reference,
    McGraw Hill, 1992,
    ISBN: 0-07-000406-4,
    LC: QA76.73.F28.F67.

Examples and Tests:

DEFAULT_NAME examines what happens when you open a file anonymously, that is, without specifying a name, only a unit number.

You can go up one level to the FORTRAN90 source codes.

Last revised on 05 May 2013.