Amazon Introduction To Coding 4

Question 1

What is the difference between '==' and '=' in many languages?

Accepted Answer

'==' compares values while '=' assigns a value

Answer

A single equals sign assigns a value, while a double equals sign tests for equality.

Question 2

Which of the following describes 'concatenation'?

Accepted Answer

Joining two or more strings together

Answer

Concatenation combines strings into one longer string.

Question 3

What is an integer?

Accepted Answer

A whole number without a decimal point

Answer

An integer is a whole number, positive or negative, with no fractional part.

Question 4

What does the term 'compile' mean?

Accepted Answer

Translate source code into machine-readable instructions

Answer

Compiling converts human-written code into a form the computer can execute.

Question 5

In an array indexed starting at 0, which index holds the first element?

Accepted Answer

0

Answer

Most languages use zero-based indexing, so the first element is at index 0.

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