Constants, variables and data types

Question 1

What is a variable?

Answer 1

A variable is a label for stored information that can change while the program is running

Question 2

What is a constant?

Answer 2

A constant is label for stored information that cant change while the program is running

Question 3

Which data type stores whole numbers?

Answer 3

Integer

Question 4

Which data type stores text?

Answer 4

String

Question 5

Which data type only has two possible values?

Answer 5

Boolean (true or false)

Question 6

Which data type can store a single letter (or number, symbol etc)

Answer 6

Character (char)

Question 7

Which data type stores any numbers including fractions?

Answer 7

Real (sometimes called float)

Question 8

Which data type would you use to store 15/4/12?

Answer 8

Date/Time

Question 9

Which data type would you use to store 20:15?

Answer 9

Date/Time

Question 10

Which data type would you use to store 4 September 2014 13:30 ?

Answer 10

Date/Time

Question 11

What characters can you start a variable name with?

Answer 11

letter or underscore

Question 12

What characters can you use in the main part of a variable name?

Answer 12

letter, number, underscore

Question 13

True or false? if a is true and b is true, a AND b is…

Answer 13

true

Question 14

If A is false and B is false then A AND B is…

Answer 14

false

Question 15

if A is false and B is true then A and B is….

Answer 15

false

Question 16

if a is true and b is true, a OR b is…

Answer 16

true

Question 17

if a is true and b is false, a OR b is…

Answer 17

true

Question 18

if a is false and b is false , a OR b is…

Answer 18

false

Question 19

if A is true, NOT A is…

Answer 19

false