Question

if the following code was run, how far would tracy move?
1 length = 25
2 length = length*2
3
4 if length != 50:
5 forward(length)
6
7 forward(100)
0 pixels
25 pixels
50 pixels
100 pixels
question: 3
why do we use if statements?
to tell tracy to stop our code if there’s an error
to have tracy make decisions based on conditional statements
to tell tracy to do something if we run our code

Explanation:

Question 1

Step1: Calculate length value

Given length = 25 initially, then length = length2, so length = 252=50.

Step2: Evaluate if - statement

The if statement if length != 50: is false since length is 50. So the code inside the if block forward(length) is not executed.

Step3: Execute final forward command

The command forward(100) is executed. So Tracy moves 100 pixels.

if statements in programming are used to make decisions based on whether a certain condition is true or false. In the context of Tracy (presumably a programming - related entity), it allows Tracy to make decisions based on conditional statements.

Answer:

100 pixels

Question 2