**Variables**

- A variable should have a name

- Values should be assigned to the variable with a '=' operator

- A variable can have an alphabetical character value K = 'l'

- Variable can also have an integer value K = '2009'

- Decimal values can also be assigned to a variable

Pi = '3.14159'

- The vector is a collection of numbers in one dimension
- t = [12 15 18 33], if individual elements are separated by spaces, then they are stored as individual columns in MATLAB
- t = [24;3;56;92], if individual elements are separated by semicolon, then they are stored as individual rows in MALTAB

**Note :- If vectors or matrices change size in your calculations then their size should be preallocated.**