Arrays
When a variable is indexed it is called an array
Arrays represent collections of data values, e.g. integers, strings, etc.
For example: dwarf(0) = “Sneezy”
dwarf(1) = “Dopey”
dwarf(2) = “Grumpy”
...
Elements of an array must all be of the same type
The index of an array element is also known as a subscript
Notice x0 and x1 are variable names, while x(0) and x(1) are different elements of array x