Programming-Chapter 3(1)

Question 1

Variable

Answer 1

refers to a memory location used to store values

Question 2

String

Answer 2

Is used for combinations of characters, such as names, phone numbers and ID numbers

Question 3

Numeric literals

Answer 3

numbers that are written into the programs code

Question 4

Variable rules

Answer 4

Declare a variable before using it
You can only assign a value to a variable if the value is compatible with the variables’ data type
Always ensure that a variable is either initialized or gets a value at some point

Question 5

Local variables

Answer 5

Variables that are declared inside a method(event handler) are called local variables
They only belong to that method
Only statements inside the method can access the variable

Question 6

Scope

Answer 6

refers to the part of a program in which a variable can be accessed

Question 7

A variables lifetime

Answer 7

Is the time period during which the variable exists in memory while the program is running

Question 8

Concatenation

Answer 8

Joins two strings together, can also happen with another data type