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Beginner's Programming Tutorial in QBasic This document is meant to get you started into programming, and assumes you have some experience with computers and with Windows 95 (or 98, etc.). Since this tutorial is written for people who don't like to read a lot of text, it includes a number of examples. Therefore, you can do a lot of work in not much time. The more important chapters have a star ( ). Feel free to distribute this tutorial, upload it to your website, link to it from your site, etc. http://www.geocities.com/progsharehouse/qbtutor Mirror: http://development.freeservers.com/qbtutor Table of Contents Part I: Q-Basics Chapter 1: Before you start Chapter 2: Your first program Chapter 3: Variables Chapter 4: Retrieving keyboard input from the user Chapter 5: The IF and THEN commands Chapter 6: Labels and the GOTO and GOSUB commands Chapter 7: Loops Chapter 8: What next? Part II: Intermediate topics Chapter 9: QBasic interface Chapter 10: Adding documentation to your programs Chapter 11: Reading and writing to files Chapter 12: Displaying graphics Chapter 13: Mathematics functions Chapter 14: Getting the current date and time Part III: Advanced topics Chapter 15: Arrays Chapter 16: Variable types Chapter 17: Subroutines and functions Chapter 18: Numbering systems Chapter 19: Memory Before you start Before you can create a program in QBasic, you need the QBasic interpreter. It is available from your Windows 95 (or 98) CD, or you can download it below. To access QBasic from the Windows 95 CD: 1. Insert the CD into your CD-ROM drive. 2. Click "browse this CD" (if the menu screen doesn't come up, then browse the CD from My Computer. 3. Go to the \OTHER\OLDMSDOS directory. 4. Open a program called QBASIC.EXE (this is version 1.1 of the QBasic interpreter). To access QBasic from the Windows 98 CD: 1. Insert the CD into your CD-ROM drive. 2. Click "browse this CD" (if the menu screen doesn't come up, then browse the CD from My Computer. 3. Go to the \TOOLS\OLDMSDOS directory. 4. Open a program called QBASIC.EXE (this is version 1.1 of the QBasic interpreter). Download it here (right-click and press "Save As"): QBASIC.ZIP (323 KB) - QBasic 1.1 interpreter and sample programs UNZIP32.EXE (90 KB) - Extracts the ZIP file To unzip the QBASIC.ZIP file with UNZIP32.EXE: a. Go to the Start Menu b. Click Run... c. Type the following (this loads MS-DOS): command d. Enter the following in DOS (assuming you saved QBASIC.ZIP to C:\QBASIC): cd c:\qbasic unzip32 -n qbasic.zip Your first program After launching the QBasic interpreter (see before you start), you might see a window requesting a list of "parameters." If this window comes up, press the Enter key to continue. You should now see the QBasic interpreter, which has a blue background and displays a dialog box at the center. (If the interpreter fills the entire screen, then you may want to press "Alt + Enter," to make it smaller.) Press the Esc key to hide the dialog box. QBasic interpreter