Amazon Introduction To Coding 3

Question 1

What does an 'if' statement do?

Accepted Answer

Executes code only when a condition is true

Answer

Conditional statements run a block of code only when a given condition evaluates to true.

Question 2

Which of these is an example of a string?

Accepted Answer

"Amazon"

Answer

A string is a sequence of characters, usually wrapped in quotation marks.

Question 3

What is the result of the operation 7 % 2 (modulo) in most languages?

Accepted Answer

1

Answer

The modulo operator returns the remainder of division, and 7 divided by 2 leaves a remainder of 1.

Question 4

What is the purpose of a comment in code?

Accepted Answer

To explain code to humans without affecting execution

Answer

Comments are notes ignored by the computer that help developers understand the code.

Question 5

Which keyword is commonly used to define a loop that runs a known number of times?

Accepted Answer

for

Answer

A 'for' loop is typically used when the number of iterations is known in advance.

Amazon Practice Test