: Clears the screen so previous program outputs do not clutter your view. PRINT : Displays text or numbers on the screen. END : Tells the computer that the program is finished. 2. Working with Variables
INPUT "What is your name? ", UserName$ PRINT "Hello, "; UserName$; "!"
String variables hold text. In QBasic, string variable names end with a dollar sign ( $ ). CLS LET name$ = "John Doe" PRINT "Welcome, "; name$ END Use code with caution.
Every QBasic program follows a sequential execution order, running from the top line down to the bottom line unless directed otherwise. 1. Your First Program: Hello World Open your QBasic editor and type the following code: CLS PRINT "Hello, World!" END Use code with caution.
Using the SCREEN 12 command changes the output interface from text mode to a 640x480 resolution canvas supporting 16 colors. You can then use commands like PSET , LINE , and CIRCLE to draw basic shapes. qbasic programming for dummies pdf
Whether you’re a total beginner or just feeling nostalgic,
Press to run it. A black screen will appear displaying Hello, World! . Code Breakdown:
Let's combine everything you learned into a mini-game. Copy this code into your editor to play.
QBasic executes instructions sequentially, moving from the top line to the bottom line unless a control structure changes the flow. Writing Your First Program Type the following code into your editor: CLS PRINT "Hello, World!" END Use code with caution. Code Breakdown : Clears the screen so previous program outputs
+------------------------------------------------------------+ | File Edit View Search Run Debug Options Help | +------------------------------------------------------------+ | | | PRINT "Hello, World!" | | | | | +------------------------------------------------------------+ | Immediate | +------------------------------------------------------------+ | CN 00001:001 | +------------------------------------------------------------+ Use code with caution. Key Navigation Shortcuts: Runs your current program. Alt: Activates the top menu bar (File, Edit, Run, etc.). Esc: Closes dialog boxes or stops a running program. Shift + F5: Restarts the program from the very first line. Your First QBasic Program: "Hello, World!"
Conditional statements allow your program to make decisions based on specific criteria using IF...THEN...ELSE structures. Comparison Operators: = (Equal to) <> (Not equal to) > (Greater than) < (Less than) >= (Greater than or equal to) <= (Less than or equal to) Example Program: Age Checker
: You can often borrow a digital copy of the 1994 edition (ISBN 1568840934) or view it through the Open Library for free with a registered account. eBooks.com : A digital edition is available for purchase at eBooks.com Better World Books
: Short for "Clear Screen." This wipes away any leftover text on the output screen from previous runs. It is good practice to start every program with this. In QBasic, string variable names end with a
You can make your computer speaker beep or play melodies using the BEEP and PLAY commands.
One of the reasons QBasic became legendary among hobbyists was its built-in support for simple retro graphics and sound. Drawing Shapes
Learn on the go with this free Android app. It contains hundreds of QBasic programs, from simple to complex, along with patterns and game codes. It’s a great way to study QBasic anytime, even without an internet connection.
CLS countdown = 5 DO WHILE countdown > 0 PRINT countdown countdown = countdown - 1 LOOP PRINT "Blast off!" END Use code with caution. Creating a Mini-Project: A Simple Calculator