Code.Org Unit 4 Variables

The "Comment" block allows...

• You to organize your code which changes it

• You to organize your code and doesn't change it

• Is a warning that something is wrong with your code

• Is a useless block and has no meaning

What is y equal to at the end of this program?

• 30

• 100

• 50

• 55

What is x equal to at the end of this program?

• 30

• 100

• 50

• 55

What number will print to the console at the end of this program?

• 20

• 21

• 23

• 24

What is y equal to at the end of this program?

• 100

• 101

• 102

• 120

What number will print to the console at the end of this program?

• 20

• 100

• 120

• 220

This code doesn't work properly. Which line is causing the problem?

• 1

• 3

• 6

• 8

Answer explanation

You only need to type "var" for the variable the first time you use it in the code. You need to delete the "var" in line 6.

A variable whose scope allows it to be used and updated by any part of the code. Its scope is typically derived from the variable being declared (created) OUTSIDE of any function, object, or method.

• Global Variable

• Local Variable

• Wide Variable

• Limited Variable

A variable with a scope that can only be seen, used and updated by code within the same scope. Typically this means the variable was declared (created) INSIDE a function -- includes function parameter variables.

• Short Variable

• Small Variable

• Global Variable

• Local Variable

What will be the value of "x" that prints to the console?

• 0

• 5

• 25

• 26