- Arrays and counting loops
- Enhanced for loop
- The length of an array
- Finding the maximum and minimum of an array of numbers
- Finding the sum of the elements of an array
- Computing the average of the elements of an array

An array that uses a single subscript is called a
**one dimensional** array.
This is because one index is used to access the values
in the array.
Its cells are like numbered boxes
lined up one after the other in a line.

A two dimensional array requires two indexes to access values. Its cells are like boxes arranged into a rectangle. Arrays of even higher dimension are possible, although rarely used. This chapter discusses typical ways to use one dimensional arrays.

How could you print out every element of an array with 100 cells?