Indexed arrays
Initialize array elements with index
Student 0 = John Doe
Student 1 = Jane Doe
Student 2 = Jeff Smith
Initialize array elements without index
Teacher 0 = Michaël Cloots
Teacher 1 = Jan Janssen
Teacher 2 = Patrick Verhaert
Initialize array with [ ]
Teacher 0 = Michaël Cloots
Teacher 1 = Jan Janssen
Teacher 2 = Patrick Verhaert