Fortran I/O Overview

This section contains the following topics:

Logical I/O Units

Types of I/O Statements

Forms of I/O Statements

Files and File Characteristics Overview

Accessing and Assigning Files

Default Pathnames and File Names

Using Preconnected Standard I/O Files

Opening Files: OPEN Statement

Obtaining File Information: INQUIRE Statement

Closing a File: CLOSE Statement

Record Operations Overview

User-Supplied OPEN Procedures: USEROPEN Specifier

Format of Record Types

Microsoft* Fortran PowerStation* Compatible Files

In addition, Optimizing Applications contains guidelines for improving I/O performance. For more information, see Improving I/O Performance.