Variables

Question 1

Define

Local variable

Answer 1

A variable declared inside a function that can only be accessed from within that function.

Question 2

Define

Global variable

Answer 2

A variable declared outside any functions that can be accessed from anywhere.

Question 3

Define

Assignment

Answer 3

The process of storing the value of an expression in a variable

Question 4

Define

Identifier

Answer 4

The name given to a variable, process or function. In most languages, these are comprised of letters, digits and the underscore character. They must commence with a letter

Question 5

Define

Integer

Answer 5

One of the infinite set of the positive and negative whole numbers including zero. In any computer system, the range of allowable values is determined by the number of bytes used and the way in which the hardware represents integers.

Question 6

Define

Floating point

Answer 6

A way of representing numbers that allows the decimal point to move freely, which allows smaller numbers to be more accurate and larger numbers to be stored.

Question 7

Define

Binary

Answer 7

Number system in which the base is two

Question 8

Define

Decimal

Answer 8

Number system in which the base is ten

Question 9

Define

Hexidecimal

Answer 9

Number system in which the base is sixteen