Hosted on freecomputerbooks.com, this tutorial is a comprehensive 103-page guide that covers everything from basic syntax to more advanced topics like graphics and file handling. It's a great all-in-one resource that you can keep on your virtual bookshelf and refer back to as you progress.
You can make your computer speaker beep or play melodies using the BEEP and PLAY commands.
Older versions of BASIC (like GW-BASIC) required you to number every line (10, 20, 30...). QBasic executes lines sequentially from top to bottom, using line numbers only as optional labels.
Since QBasic was designed for MS-DOS, it won't run natively on modern versions of Windows, Mac, or Linux without help: qbasic programming for dummies pdf
You can download the original QBASIC.EXE file and run it inside DOSBox, a free software that emulates the old MS-DOS environment. Core Concepts and Syntax
QBasic can manipulate your computer's motherboard speaker to produce sounds. : Emits a quick, standard alert sound.
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CLS PRINT "=== Age Calculator ===" INPUT "What is your name? ", userName$ INPUT "How old are you? ", age currentYear = 2026 birthYear = currentYear - age PRINT "Hello "; userName$; ", you were probably born in "; birthYear END Use code with caution. Key Concept:
Numeric variables do not use special characters at the end for standard integers.
For absolute beginners, especially young students or those intimidated by modern programming, QBASIC offers: Older versions of BASIC (like GW-BASIC) required you
CLS SCREEN 12 ' Sets the screen to 640x480 resolution with 16 colors ' CIRCLE (X, Y), Radius, ColorCode CIRCLE (320, 240), 50, 10 ' Draws a green circle in the center ' LINE (X1, Y1)-(X2, Y2), ColorCode LINE (100, 100)-(200, 200), 12 ' Draws a red diagonal line END Use code with caution. Making Sound Effects
Use this loop when you want code to repeat until a specific condition changes.