Hello World Example¶

The classic first program in any language.

The Program¶

10 PRINT "Hello, World!"
20 END

How It Works¶

Line 10: PRINT "Hello, World!" - The PRINT statement outputs text to the screen - Text in quotes is displayed exactly as written - The semicolon at the end is optional

Line 20: END - Tells BASIC to stop running the program - Always good practice to end programs with END

Running the Program¶

Type each line (the line number, then the statement)
Press Enter after each line
Type RUN and press Enter
You should see: Hello, World!

Variations¶

With Variables¶

10 MESSAGE$ = "Hello, World!"
20 PRINT MESSAGE$
30 END

With Input¶

10 INPUT "Enter your name: ", NAME$
20 PRINT "Hello, "; NAME$; "!"
30 END

When you run this:

Enter your name: Alice
Hello, Alice!

Multiple Greetings¶

10 PRINT "Hello, World!"
20 PRINT "Welcome to BASIC!"
30 PRINT "Let's learn programming!"
40 END

Common Mistakes¶

Forgetting the quotes:

10 PRINT Hello, World!    ' ERROR: Syntax error

Must use quotes for text: PRINT "Hello, World!"

Missing line numbers:

PRINT "Hello"    ' ERROR: Syntax error

Every program line needs a number: 10 PRINT "Hello"

Next Steps¶

Now that you've written your first program, try: - Loop Examples - Repeating actions - Variables - Storing data - INPUT Statement - Getting user input