SECURITY: Unit 4 Review

How can we improve the following program?

• Break down the program into more functions

• Use a for loop to repeat the move command

• Use a while loop to repeat the move command

• Fix the indentation and remove a bracket

In the following code, what happens to Karel if a ball is present?

• Karel will put down a ball

• Karel will move

• Karel will stop

• Karel will pick up the ball

What is the purpose of using a FOR loop in code?

• To do something if a condition is true

• To repeat something a fixed number of times

• To do something if a condition is false

• To make the program run faster

What makes the following command an invalid Karel command?

turnleft();

• the semicolon shouldn't be there

• the 'l' should be a capital 'L'

• it should start with a capital 'T'

• the command is correct

What is wrong with this code?

• The go function is called twice

• The go function has a syntax error

• The go function has been defined twice

• The go function does not work

How many total times will Karel move in this program?

• 5

• 6

• 7

• 8

What is the proper format for a single line comment in Karel?

• // this is a comment

• //* this is a comment

• # this is a comment

• *// this is a comment

A bakery has 10 cookies in its inventory. How can you store this information in a JavaScript variable?

• var = cookies + 10;

• var cookies = 10;

• var cookies == 10;

• cookies = 10 Var()

Why do programmers indent their code?

• Helps show the structure of the code.

• Easier for other people to understand.

• A key part of good programming style!

• All of the above.

How can we teach Karel new commands?

• For loop

• While loop

• If statement

• Define a function