Google Interview Question for Software Engineer / Developers






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Object oriented feature Polymorphism is acheived using 'virtual functions'.

Polymorphism allows imporved code organization and readability.

In addition, importantly, vitual functions allow to create 'extensible' programs that can be grown not only during the original creation of objects, but also when new features are added.

Hope this helps.

- Venkata January 04, 2010 | Flag Reply
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does google ask these silly questions or is it google with a single 'o'

- Anonymous January 04, 2010 | Flag Reply
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u r not as smart as u think

- a March 11, 2011 | Flag
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I second that !

- Anonymous January 04, 2010 | Flag Reply
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It will provide the Run time polymorphism to C++. It determines the function calls at the run time.

- Rajesh Manem February 12, 2010 | Flag Reply
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When you refer to a derived class object using a pointer or a reference to the base class, you can call a virtual function for that object and execute the derived class's version of the function.

Virtual functions ensure that the correct function is called for an object, regardless of the expression used to make the function call

- Sunil April 06, 2010 | Flag Reply


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