CLS secretNumber = 7 guess = 0 PRINT "Guess the secret number between 1 and 10!" DO WHILE guess <> secretNumber INPUT "Enter your guess: ", guess IF guess <> secretNumber THEN PRINT "Wrong! Try again." END IF LOOP PRINT "You got it! The secret number was indeed 7." END Use code with caution. Best Practices for Writing Clean QBasic Code
Use the BEEP command to make a quick system alert, or the advanced PLAY command, which allows you to type notes as text strings (e.g., PLAY "C D E F G" ). Summary Cheat Sheet CLS Clears the output terminal window. CLS PRINT Displays text or numeric data on-screen. PRINT "Score: "; points INPUT Prompts user and saves input to a variable. INPUT "Name: ", n$ IF...THEN Evaluates a condition to branch logic. IF score > 10 THEN PRINT "Win" FOR...NEXT Repeats a block of code a set number of times. FOR x = 1 TO 5 REM / ' Creates a comment (ignored by the computer). ' This is a comment
Here is a simple program that calculates a birth year based on age:
Here’s how a typical page in a “Dummies” QBASIC PDF might read: qbasic programming for dummies pdf
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.
This concise 25-page PDF is an excellent quick-start guide. It covers the essential rules of QBASIC, explains data types (constants and variables), and introduces the concepts of Direct Mode and Program Mode. It's like the "cheat sheet" you wish you had.
By practicing these core syntax structures in QBasic, you will find transitioning to modern languages like Python or JavaScript much easier, as they share the exact same logical principles. CLS secretNumber = 7 guess = 0 PRINT
Let's write your very first program.Once your QBasic/QB64 editor is open, type the following code directly into the blue screen: CLS PRINT "Hello, World!" END Use code with caution. Running the Code
Let’s write a classic introductory program. Open your compiler and type the following:
Congratulations! You have just learned the foundational structures of computer programming.To keep coding, remember this quick reference cheat sheet: CLS Wipes the output screen clean CLS PRINT Displays text or math results PRINT "Hello" INPUT Gets data from the keyboard INPUT num IF...THEN Checks a condition IF x = 1 THEN PRINT "Yes" FOR...NEXT Loops a specific number of times FOR x = 1 TO 5 END Safely stops the program END Best Practices for Writing Clean QBasic Code Use
If you are dealing with financial figures or tidy lists, use PRINT USING to template your numbers.
Introduction To QBasic Class 6 | PDF | Computer Program - Scribd
QBasic does not care if you type PRINT , print , or Print . When you press Enter, the IDE automatically capitalizes your commands.
Because QBasic is a 16-bit DOS application, modern 64-bit operating systems (Windows 10/11, macOS, and Linux) cannot run it natively. Fortunately, getting it to run on modern hardware takes less than five minutes using an emulator. Option 1: QB64 (Recommended)
QBasic is an integrated development environment (IDE) and interpreter for the BASIC programming language. It comes with a built-in text editor, compiler, and debugger, allowing you to write and run code instantly.