--%>
Assignment Help - homework help

  Polymorphism

Introduction to Polymorphism

Is the ability to take  more than one form. For example an operation may  behave differently indifferent instances. The behaviour depends on the types  of data used in the  operation. This is similar to a word having several different meanings depending on context.

201_Polymorphism Homework Help.jpg

To illustrate this concept  consider an example of drawing a specific shape. It is shown  in fig above, in which  a shape  can be  drawn  in the form  of either a circle, a box or triangle.

To extend the example  shape consider the various  2D shapes defining the  class shape 2D as shown in fig below.

1427_Polymorphism Homework Help 1.jpg

This example has a four level  hierarchy with  generalizations. Various classes used are:

1. Elliptical  shape and polygon which inherit from  shape 2D.

2. Simple polygon and  arbitrary polygon which  inherit from polygon.

3. Circle and ellipse which inherit from elliptical shape.

4. Rectangle and regular polygon which inherit from simple polygon.

Shapes 2D is the  ultimate super class of the hierarchy. All its  operation and methods are inherited by each  of other subclasses. Shapes  2 Modify the shape. Following are the outcomes of its operations:

  • Rotate () tales number of degrees to rotate the shape. Shape is modified according to that .
  • Translate () takes x and y values an moves the shape in x and y directions.
  • Get centre () returns the value of the centre instance variable.
  • Get area () returns area
  • Get circumference () returns perimeter.

The class which inherit these operations  take  advantage  of properties unique to its  class. That means  that every  operation will perform a function which is specific to that  class only. For example  the rotate  function  perform rotation with the degrees specified for every  specified shapes. For  circle  it does absolutely nothing and returns  immediately.  

C programming  simulates polymorphism using void  pointers  and doing  a considerable  amount  of type  casting. While the simulation is possible  we cant  use a structure hidden within  a void pointer first  casting it to  be a pointer to a given  structure. So,

  • Polymorphism greatly reduces the effort required to extend an existing OO system.
  • Polymorphism has a concept called   overloading which lets same function but with different number or type  of arguments  to behave  differently when called for execution.

Latest technology based Software Engineering Online Tutoring Assistance

Tutors, at the www.tutorsglobe.com, take pledge to provide full satisfaction and assurance in Polymorphism homework help via online tutoring. Students are getting 100% satisfaction by online tutors across the globe. Here you can get homework help for Polymorphism, project ideas and tutorials. We provide email based Polymorphism homework help. You can join us to ask queries 24x7 with live, experienced and qualified online tutors specialized in Polymorphism. Through Online Tutoring, you would be able to complete your homework or assignments at your home. Tutors at the TutorsGlobe are committed to provide the best quality online tutoring assistance for Software Engineering homework help and assignment help services. They use their experience, as they have solved thousands of the software engineering assignments, which may help you to solve your complex issues of Polymorphism. TutorsGlobe assure for the best quality compliance to your homework. Compromise with quality is not in our dictionary. If we feel that we are not able to provide the homework help as per the deadline or given instruction by the student, we refund the money of the student without any delay.