Learn LOGO with Real Code Examples

make "count 0
make "isDark 0

to updateUI
    print (sentence "Counter: :count)
    print (sentence "Theme: (if :isDark = 1 [Dark] [Light]))
end

to increment
    make "count :count + 1
    updateUI
end

to decrement
    make "count :count - 1
    updateUI
end

to reset
    make "count 0
    updateUI
end

to toggleTheme
    make "isDark (1 - :isDark)
    updateUI
end

; Simulate actions
updateUI
increment
increment
toggleTheme
decrement
reset

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

to square :size
    repeat 4 [forward :size right 90]
end

square 100

Draws a square using Logo turtle graphics.

to triangle :size
    repeat 3 [forward :size right 120]
end

triangle 150

Draws an equilateral triangle.

to circle :radius
    repeat 360 [forward 1 right 1]
end

circle 50

Approximates a circle using small forward steps and turns.

to spiral :length :angle
    if :length > 200 [stop]
    forward :length
    right :angle
    spiral :length + 5 :angle
end

spiral 10 20

Draws a simple spiral pattern.

to star :size
    repeat 5 [forward :size right 144]
end

star 100

Draws a 5-pointed star.

to polygon :sides :length
    repeat :sides [forward :length right 360/:sides]
end

polygon 6 80

Draws a regular polygon with N sides.

to triangle :size
    repeat 3 [forward :size right 120]
end

repeat 6 [triangle 50 right 60]

Draws multiple triangles to form a pattern.

to randomWalk :steps
    repeat :steps [
    forward 20
    right random 360
]
end

randomWalk 50

Turtle moves in random directions to simulate a random walk.

to colorfulSpiral :length :angle
    if :length > 200 [stop]
    setpencolor random 16
    forward :length
    right :angle
    colorfulSpiral :length + 5 :angle
end

colorfulSpiral 10 20

Draws a colorful spiral using Logo pen colors.