Week 4 Chapter 5

Question 1

Why is the modulus operator useful?

Answer 1

Can be used to see if one number is divisible by another.

Can extract right most digit/s from a number

Question 2

What is a Boolean expression?

Answer 2

True or false expression

Question 3

What data type are booleans?

Answer 3

Belong to bool and are not strings

Question 4

What is the == ?

Answer 4

Relational operator

Question 5

What are the three logical operators?

Answer 5

And, or, not

Question 6

What do conditional statements do?

Answer 6

Check condition then execute accordingly

Question 7

What is the Boolean expression after an if called ?

Answer 7

Condition

Question 8

A header followed by a statement is referred to as what?

Answer 8

Compound statements

Question 9

What does the pass statement do?

Answer 9

Does nothing at that part

Question 10

What is an example of alternative if execution?

Answer 10

If and else statements

Question 11

The alternatives in an alternative execution are called what?

Answer 11

Branches

Question 12

What is a way to express more than two branches in a computation?

Answer 12

Through a chained conditional with an elif statement

Question 13

In a chained conditional, since elif is required is else required?

Answer 13

Optional but must appear at the end

Question 14

In chained conditionals what order are branches checked in and what happens when one is true?

Answer 14

Top to bottom and if one is true then it stops right there

Question 15

What are the cons of nested conditionals?

Answer 15

Difficult to read very quickly, good idea to avoid them

Question 16

What are nested conditionals?

Answer 16

Conditionals nested in a branch

Question 17

Is it legal for a function to call itself?

Answer 17

Yes

Question 18

Is it legal for a function to call another function?

Answer 18

Yes

Question 19

A function that calls it self is ____and the process is called _____

Answer 19

Recursive recursion

Question 20

What is the modulus operator?

Answer 20

Modulus operator works on integers and yields the remainder when first operand is divided by the second.