Traversal of array
1. Definition: accessing array elements one by one from beginning to end is called traversal of array
2. The subscript range of traversal is: 0~ length-1;
3. Can use loop variables to control array subscripts.
Example:

1. Definition: accessing array elements one by one from beginning to end is called traversal of array
2. The subscript range of traversal is: 0~ length-1;
3. Can use loop variables to control array subscripts.
Example:
