Rosetta Stone - Comparing NXT-G, NXC, Python, and Scratch: NeboMusic

Comparing NXT-G, NXC, Python-Turtle, and Scratch
Basic Movement Commands for Turtle and Robotics

NXT-G

NXC

Python-Turtle

Scratch

Basic Forward (Motor A)

OnFwd(OUT_A, 75);

forward()

Basic Stop (Motors B and C)

Off(OUT_BC);

No Python Version

No Scratch Version

Forward a set distance
of one motor rotation

RotateMotor(OUT_BC, 75, 360);

forward(100)

Swing Turn Left

RotateMotor(OUT_B, 75, 360);

left(90)

Swing Turn Right

RotateMotor(OUT_C, 75, 360);

right(90)

Point Turn Right

RotateMotorEx(OUT_BC, 75, 360, 100);

Repeat

repeat(4)
    {
         Task;
    }

for i in range(4):
Task

Infinite Loop

while(true)
    {
        Task;
    }

while True:

If Statement

if(condition)
    {
        Task;
    }

-or-

do
    {
        Task;
    }
while(condition)

if condition:
Task

If Else

if(condition)
    {
         Task;
    }
else
    {
        Another Task;
    }

if condition:
Task
else:
Another Task

Comments

// Put Comments after slashes

# Put Comments Here

No Comment Function in Scratch

Defining Functions

task Draw_Square()

def Draw_Square():

When I Receive DrawSquare

Sample Program
(Move in a Square or Draw a Square)

// This Program Draws a Square
// in NXC

task main()
{
    repeat(4)
    {
        RotateMotor(OUT_BC, 75, 1440);
        RotateMotor(OUT_B, 75, 360);
    }
}

# This Program Draws
# a Square in Python

from turtle import *

for i in range(4):
forward(100)
right(90)