FreeBASIC Manual

FreeBASIC Manual

Welcome to FreeBASIC | Getting Help with FreeBASIC

Language Documentation

Keywords - Alphabetical Keywords - Functional Graphics Keywords Operators List

Variables and Data Types Variable Declarations User Defined Types Standard Data Types Standard Data Type Limits Converting Between Data Types Operators Operators Operator Precedence Bitwise Operators & Truth Tables Statements Control Flow Procedures Modularizing Other Preprocessor Escape Sequences In String Literals Meta-statements Intrinsic Defines Error Handling

Tutorials Programmer's Guide Community Tutorials Community Code Library External Libraries Index

Using the FreeBASIC compiler

Installing FreeBASIC | Requirements Running FreeBASIC Using the Command Line | Command Line Options

Debugging with FreeBASIC

Compiler Error Messages Tools used by fbc

FreeBASIC dialects and QBASIC

FreeBASIC and Qbasic | Differences from QB FreeBASIC Dialects

FAQs

Compiler FAQ Graphics Library FAQ

Inline Asm

Runtime Library Reference

Array Functions Bit Manipulation Console Functions Date and Time Functions Error Handling Functions File IO Functions Mathematical Functions Memory Functions Operating System Functions String Functions Threading Support Functions User Input Functions

Graphics Library Reference

2D Drawing Functions User Input Functions Screen Functions

Supported graphics drivers (backends) Keyboard Scan Codes Default Palettes

Runtime Library FAQ Xbox port FAQ DOS related FAQ Windows related FAQ Linux related FAQ

Miscellaneous

Obsolete Keywords Glossary Miscellaneous Keywords C Standard Library Functions ASCII Character Codes Runtime Error Codes C/C++ vs. FreeBASIC syntax comparison C/C++ vs. FreeBASIC integer data type comparison

Hacking on FreeBASIC

Developer's Table of Contents

This document last compiled : 2016/01/31 14:20:41 from

Welcome to FreeBASIC

Welcome to our world! This page is an overview of our online warehouse of knowledge. Enjoy your surfing and we hope this will be the first of many visits.

Introduction FreeBASIC is a free 32-bit compiler for the BASIC language. It is open source and licensed under the GPL. It is designed to be syntax compatible with QuickBASIC, while expanding on the language and capabilities. It can create programs for MS-Windows, DOS and Linux, and is being ported to other platforms. See About FreeBASIC and Main Features.

Latest Version FreeBASIC is a beta release compiler and development is ongoing. With each full update, many features are added, and bugs from previous releases are fixed. To see the latest version available, visit on SourceForge, or on FreeBASIC's official website.

Requirements and Installation Minimum hardware is listed on the Requirements page. Visit our Installation page for setting up FreeBASIC on your computer.

Running FreeBASIC is a compiler and as such is not packaged with an IDE (Integrated Development Editor), although there are a few IDE's available. For information on using FreeBASIC without an IDE, see Running.

Compatibility with QuickBASIC FreeBASIC is designed to be syntax compatible with QuickBASIC. For best code-compatibility with QuickBASIC, the QB dialect can be used when compiling source code. See FreeBASIC Dialects and Differences from QB.

Documentation All official documentation can be found online in the wiki at . The online documentation is the most upto-date resource available. In all cases it can be regarded as the correct version. The downloadable versions of the manual are snapshots of the documentation available at a particular time and should be mostly correct for a specific released version of the compiler. However, we do not maintain multiple versions of the documentation so there may be some discrepancies.

Starting points in the Manual Table of Contents Getting Help with FreeBASIC Programmer's Guide

Starting points on the Web Official Website at Official Forums at Official Archive at

Thank you for using FreeBASIC. Happy coding!

Getting help with FreeBASIC

There are several options available for getting help with FreeBASIC.

The Manual This huge user's manual is full of information that can help you learn to write programs using FreeBASIC.

The manual is available online at . There is a search box at the bottom of every page to help you find what you're looking for.

If you are unfamiliar with FreeBASIC or the documentation, you may find these pages a good place to start:

Table of Contents Programmer's Guide Library Headers Index Glossary Compiler FAQ Graphics Library FAQ Runtime Library FAQ

A downloadable manual (in CHM format) is available from the sourceforge project page at which features a full table of contents, searching capabilities, an index, plus all the same content as the online version.

Searching the manual on or offline is an excellent place to start finding help about how to write and use FreeBASIC programs.

Examples and Source Code In the ./examples directory located where FreeBASIC was installed on your system are hundreds of examples to be compiled and run. Most of the external library examples will need additional libraries to be downloaded to allow them to work. See Library Headers Index for a full list.

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