Variable-length entities. fixed-length entities. data structures that contain up to 10 related data items. used to draw a sequence of lines, or "rays.

Create a pseudocode design to prompt a student for their student id and the titles of the three classes they want to add. the solution should display the student’s id and a total bill. • bill a student using the following rules: o students can only add up to 3 classes at a time.

Why should characters such as / \ " ' * ; - ? [ ] ( ) ~ ! $ { } < > # @ & | space, tab, and newline be avoided in file names?

Why do we mark tlc plates with pencil and not with pen