Learn Gambas - 10 Code Examples & CST Typing Practice Test

Gambas is a free, object-oriented programming language and development environment based on BASIC, designed primarily for Linux. It allows rapid development of graphical, database, and console applications, with a visual IDE similar to Visual Basic.

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Gambas Counter and Theme Toggle Gambas Random Number Generator Gambas Todo List Gambas Dice Roller Gambas Countdown Timer Gambas Prime Checker Gambas Temperature Converter Gambas Shopping Cart Gambas Name Greeting Gambas Stopwatch

Learn GAMBAS with Real Code Examples

Updated Nov 21, 2025

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Code Sample Descriptions

Gambas Counter and Theme Toggle

DIM count AS INTEGER = 0
DIM isDark AS BOOLEAN = FALSE

PROCEDURE updateUI()
    PRINT "Counter: "; count
    IF isDark THEN
        PRINT "Theme: Dark"
    ELSE
        PRINT "Theme: Light"
    END IF
END PROCEDURE

PROCEDURE increment()
    count += 1
    updateUI()
END PROCEDURE

PROCEDURE decrement()
    count -= 1
    updateUI()
END PROCEDURE

PROCEDURE reset()
    count = 0
    updateUI()
END PROCEDURE

PROCEDURE toggleTheme()
    isDark = NOT isDark
    updateUI()
END PROCEDURE

' Simulate actions
updateUI()
increment()
increment()
toggleTheme()
decrement()
reset()

Demonstrates a simple counter with theme toggling using Gambas variables and procedures.

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Gambas Random Number Generator

FOR i = 1 TO 3
    PRINT "Random "; i; ": "; Rnd(1,100)
NEXT

Generates random numbers between 1 and 100 and prints them.

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Gambas Todo List

DIM todos AS NEW Collection

PROCEDURE addTask(task AS String)
    todos.Add(task)
    FOR EACH t AS String IN todos
        PRINT t;
    NEXT
END PROCEDURE

PROCEDURE removeTask(index AS Integer)
    todos.RemoveAt(index)
    FOR EACH t AS String IN todos
        PRINT t;
    NEXT
END PROCEDURE

' Simulate actions
addTask("Buy milk")
addTask("Write Gambas code")
removeTask(0)

Maintains a simple todo list with add and remove functionality.

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Gambas Dice Roller

FOR i = 1 TO 3
    PRINT "Roll "; i; ": "; Rnd(1,6)
NEXT

Rolls a six-sided dice three times.

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Gambas Countdown Timer

DIM count AS INTEGER = 5
WHILE count >= 0
    PRINT "Countdown: "; count
    count -= 1
WEND
PRINT "Done!"

Counts down from 5 to 0.

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Gambas Prime Checker

FUNCTION isPrime(n AS Integer) AS Boolean
    IF n < 2 THEN RETURN FALSE
    FOR i = 2 TO Sqr(n)
        IF n MOD i = 0 THEN RETURN FALSE
    NEXT
    RETURN TRUE
END FUNCTION

DIM nums AS INTEGER[] = [7,10,13]
FOR EACH n AS Integer IN nums
    PRINT n; " is "; IIF(isPrime(n), "Prime", "Not Prime")
NEXT

Checks if numbers are prime.

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Gambas Temperature Converter

FUNCTION cToF(c AS Double) AS Double
    RETURN c * 9 / 5 + 32
END FUNCTION

FUNCTION fToC(f AS Double) AS Double
    RETURN (f - 32) * 5 / 9
END FUNCTION

PRINT "25°C = "; cToF(25); "°F"
PRINT "77°F = "; fToC(77); "°C"

Converts Celsius to Fahrenheit and Fahrenheit to Celsius.

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Gambas Shopping Cart

DIM cart AS NEW Collection
DIM prices AS NEW Collection

PROCEDURE addItem(item AS String, price AS Integer)
    cart.Add(item)
    prices.Add(price)
    PRINT "Cart: "; cart
    PRINT "Total: "; prices.Sum
END PROCEDURE

PROCEDURE removeItem(index AS Integer)
    cart.RemoveAt(index)
    prices.RemoveAt(index)
    PRINT "Cart: "; cart
    PRINT "Total: "; prices.Sum
END PROCEDURE

' Simulate actions
addItem("Apple", 2)
addItem("Banana", 3)
removeItem(0)

Adds and removes items in a shopping cart with total cost.

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Gambas Name Greeting

PROCEDURE greet(name AS String)
    PRINT "Hello, "; name; "! Welcome!"
END PROCEDURE

' Simulate actions
greet("Saurav")
greet("Alice")
greet("Bob")

Greets users by name.

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Gambas Stopwatch

DIM time AS INTEGER = 0
WHILE time < 5
    PRINT "Stopwatch: "; time; " seconds"
    time += 1
WEND
PRINT "Done!"

Simulates a stopwatch incrementing seconds.

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Frequently Asked Questions about Gambas

What is Gambas?

What are the primary use cases for Gambas?

Developing Linux GUI applications. Rapid prototyping for desktop software. Database applications with MySQL, PostgreSQL, or SQLite. Educational purposes for learning programming. Small utility and productivity tools on Linux

What are the strengths of Gambas?

Rapid development for Linux desktop applications. Intuitive syntax similar to Visual Basic. Built-in IDE with GUI designer. Supports modern object-oriented programming. Active open-source community with extensions

What are the limitations of Gambas?

Primarily Linux-focused, limited Windows/Mac support. Smaller ecosystem compared to mainstream languages. Less suitable for performance-critical applications. Limited industrial adoption. Relatively smaller community and documentation

How can I practice Gambas typing speed?

CodeSpeedTest offers 10+ real Gambas code examples for typing practice. You can measure your WPM, track accuracy, and improve your coding speed with guided exercises.

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Code Sample Descriptions

Gambas Counter and Theme Toggle

DIM count AS INTEGER = 0
DIM isDark AS BOOLEAN = FALSE

PROCEDURE updateUI()
    PRINT "Counter: "; count
    IF isDark THEN
        PRINT "Theme: Dark"
    ELSE
        PRINT "Theme: Light"
    END IF
END PROCEDURE

PROCEDURE increment()
    count += 1
    updateUI()
END PROCEDURE

PROCEDURE decrement()
    count -= 1
    updateUI()
END PROCEDURE

PROCEDURE reset()
    count = 0
    updateUI()
END PROCEDURE

PROCEDURE toggleTheme()
    isDark = NOT isDark
    updateUI()
END PROCEDURE

' Simulate actions
updateUI()
increment()
increment()
toggleTheme()
decrement()
reset()

Demonstrates a simple counter with theme toggling using Gambas variables and procedures.

Let’s Try →

Gambas Random Number Generator

FOR i = 1 TO 3
    PRINT "Random "; i; ": "; Rnd(1,100)
NEXT

Generates random numbers between 1 and 100 and prints them.

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Gambas Todo List

DIM todos AS NEW Collection

PROCEDURE addTask(task AS String)
    todos.Add(task)
    FOR EACH t AS String IN todos
        PRINT t;
    NEXT
END PROCEDURE

PROCEDURE removeTask(index AS Integer)
    todos.RemoveAt(index)
    FOR EACH t AS String IN todos
        PRINT t;
    NEXT
END PROCEDURE

' Simulate actions
addTask("Buy milk")
addTask("Write Gambas code")
removeTask(0)

Maintains a simple todo list with add and remove functionality.

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Gambas Dice Roller

FOR i = 1 TO 3
    PRINT "Roll "; i; ": "; Rnd(1,6)
NEXT

Rolls a six-sided dice three times.

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Gambas Countdown Timer

DIM count AS INTEGER = 5
WHILE count >= 0
    PRINT "Countdown: "; count
    count -= 1
WEND
PRINT "Done!"

Counts down from 5 to 0.

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Gambas Prime Checker

FUNCTION isPrime(n AS Integer) AS Boolean
    IF n < 2 THEN RETURN FALSE
    FOR i = 2 TO Sqr(n)
        IF n MOD i = 0 THEN RETURN FALSE
    NEXT
    RETURN TRUE
END FUNCTION

DIM nums AS INTEGER[] = [7,10,13]
FOR EACH n AS Integer IN nums
    PRINT n; " is "; IIF(isPrime(n), "Prime", "Not Prime")
NEXT

Checks if numbers are prime.

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Gambas Temperature Converter

FUNCTION cToF(c AS Double) AS Double
    RETURN c * 9 / 5 + 32
END FUNCTION

FUNCTION fToC(f AS Double) AS Double
    RETURN (f - 32) * 5 / 9
END FUNCTION

PRINT "25°C = "; cToF(25); "°F"
PRINT "77°F = "; fToC(77); "°C"

Converts Celsius to Fahrenheit and Fahrenheit to Celsius.

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Gambas Shopping Cart

DIM cart AS NEW Collection
DIM prices AS NEW Collection

PROCEDURE addItem(item AS String, price AS Integer)
    cart.Add(item)
    prices.Add(price)
    PRINT "Cart: "; cart
    PRINT "Total: "; prices.Sum
END PROCEDURE

PROCEDURE removeItem(index AS Integer)
    cart.RemoveAt(index)
    prices.RemoveAt(index)
    PRINT "Cart: "; cart
    PRINT "Total: "; prices.Sum
END PROCEDURE

' Simulate actions
addItem("Apple", 2)
addItem("Banana", 3)
removeItem(0)

Adds and removes items in a shopping cart with total cost.

Let’s Try →

Gambas Name Greeting

PROCEDURE greet(name AS String)
    PRINT "Hello, "; name; "! Welcome!"
END PROCEDURE

' Simulate actions
greet("Saurav")
greet("Alice")
greet("Bob")

Greets users by name.

Let’s Try →

Gambas Stopwatch

DIM time AS INTEGER = 0
WHILE time < 5
    PRINT "Stopwatch: "; time; " seconds"
    time += 1
WEND
PRINT "Done!"

Simulates a stopwatch incrementing seconds.

Let’s Try →

Frequently Asked Questions about Gambas

What is Gambas?

What are the primary use cases for Gambas?

What are the strengths of Gambas?

What are the limitations of Gambas?

How can I practice Gambas typing speed?

CodeSpeedTest offers 10+ real Gambas code examples for typing practice. You can measure your WPM, track accuracy, and improve your coding speed with guided exercises.