VARIABLES, DATA TYPES and CONSTANTS

Question 1

What does Variable do?

Answer 1

They hold values

Question 2

Int -

Answer 2

Whole number such as 156, 0, -54

Question 3

Float/Real

Answer 3

Float

Number with a fractional part such as 1.5276, -68.4, 20.0

Question 4

Char or Character

Answer 4

A single ASCII character

str

Question 5

String

Answer 5

str

zero or more characters

Question 6

Boolean

Answer 6

bool

Can only take the values true or false

Question 7

Why declare a constant

Answer 7

Prevents the code accidently being changed by a part of code

It shows a programmer that the value that the value should stay the same throughout the program.

Constants are typically shown in uppercase

Words are separated with an underscore, e.g. MIN_AGE

This is known as snake case

Question 8

A CONSTANT CAN NEVER CHANGE ITS VALUE

A CONSTANT CAN BE CHANGED BY A PROGRAMMER BEFORE THE PROGRAM IS COMPILED OR TRANSLATED.

Answer 8

A CONSTANT CAN NEVER CHANGE ITS VALUE

A CONSTANT CAN BE CHANGED BY A PROGRAMMER BEFORE THE PROGRAM IS COMPILED OR TRANSLATED.

Question 9

31 // 7

Answer 9

how many times it goes in

Question 10

31 % 7

Answer 10

the remainder