1.8

Question 1

What is a variable?

Answer 1

A variable is a named memory location that holds data that during the execution of a program, the data can change.

Question 2

Define constant.

Answer 2

A constant is fixed data that during the execution of a program cannot change.

Question 3

What is an operator?

Answer 3

An operator is a symbol used to instruct a computer to perform a specific operation on one or more values. E.g. arithmetic, comparison

Question 4

What is a programming construct?

Answer 4

A programming construct determines the order in which lines of code are executed and controls the logic and behaviour of code.

Question 5

The three core programming constructs are?

Answer 5

The three core programming constructs are sequence, selection, and iteration.

Question 6

Define sequence

Answer 6

Sequence refers to lines of code which are run one line at a time in the order they are written from first to last.

Question 7

What is selection?

Answer 7

Selection is when the flow of a program is changed depending on a set of conditions, determining which lines or block of code runs next.

Question 8

What is casting?

Answer 8

Casting is when you convert one data type to another data type.

Question 9

what does the % operator do

Answer 9

Gives the remainder of a division
10%3=1

Question 10

what does the // operator do

Answer 10

gives the numbger of times the divider fits into the divided number
10//3=3

Question 11

code to make things uppper and lowercase

Answer 11

var.upper() and var.lower()

Question 12

code for lenghth of a string

Answer 12

len(var)

Question 13

code for concatination

Answer 13

var1+var2