Objects and Classes

Complete the following exercises by the due date. Make sure your source code using appropriate

programming style $($e$.$g$.,$ descriptive variable names, indenting, comments, etc.$).$

Exercises

You have been asked to develop a program to simulate the operation of an elevator for a three story

building. Unfortunately, this elevator can only go up or down one floor at a time. So if you want it to go

from the first floor to the third floor, you must tell it to goUp$()($from the first to the second floor$),$ and

goUp$()$ again to make it to the third floor. The same applies to goDown$().$

$1.$ Your Elevator class should have one integer variable: currentFloor.

$2.$ Your class should only need three methods: goUp$(),$ goDown$(),$ and displayCurrentFloor$().$

$3.$ Write an elevator test program. Have the program execute the following steps using the methods in

the class:

$$ Start on the first floor.

$$ Go to the second floor.

$$ Go to the third floor

$$ Attempt to go to the fourth floor $($Remember: there are only three floors$)$

$$ Go back to the second floor

$$ Go back to the first floor

$$ Be sure to call displayCurrentFloor$()$ to notify the user which floor the elevator is on at each step

Note: you will need separate source file for the class definition and the elevator test program.

What to Turn In

For each exercise, submit the source code and the screen output.

Learning Objectives

This exercise contributes to the development of problem solving and debugging skills. After completing

this exercise, students should understand the properties of creating their own data types and

performing simple operations with them.