Edhesive - Intro to CS Unit 3

What is an if-then statement used for in a program?

• Repeat sections of code

• To allow programs to make decisions

• To count user input

Answer explanation

IF statements check conditions in order to decide if certain lines of code should be ran or not.

The following code can be rewritten as:

if 75 <= y <= 100:

• if (75 <= y and <= 100):

• if 75 <= y and <= 100):

• if (75 <= y and y <= 100):

• if (75 <= y <= 100):

Answer explanation

This correctly tests if 75 is smaller than y AND if y is smaller than 100

Which of the following is true when a is 4 and b is 8?

• a < b and a==b

• b <= a or a > b

• a > b or a == b

• a < b and a != b

The following code could be rewritten using:

if (num1 == 17):

if ( num2 < 20):

• not

• or

• and

• none of the above

To test if x is less than or equal to y:

if (x ______y):

• >

• <

• >=

• <=

For if statements to work in Python, you must ________ them.

• intent

• make decisions about

• add an else to

• use input commands with

The else happens when the if condition is _________

• true

• false

The ______ lets you test a second (or third, or fourth...) condition

• if

• else

• elif

• or

not equal to

• ==

• =

• !=

equal to

• ==

• =

• !=