242-30: Arrays Made Easy: An Introduction to Arrays and ...

When we set the array bounds with the subscript and only specify the number of elements within the array as our upper bound, the lower bound is the default value of 1. In our example, the index begins with the lower bound of 1 and ends with the upper bound of 24. There may be scenarios when we want the index to begin at a lower bound other than 1.

  Array, Lower, Bound, Upper, Array bounds