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What is Pure Virtual Function?

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Updated: 22/04/2018

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On 4/2/2018 at 10:00 AM, VITSUSA said:

Pure virtual Functions are virtual functions with no definition. They start with virtual keyword and ends with = 0. Here is the syntax for a pure virtual function,

virtual void f() = 0;

Adding on, pure virtual functions can only be declared in abstract classes. 
They aren't allowed to have a definition that the abstract class that declared them.
And they must be defined in any class that inherits it (the pure virtual function). 

Edit: Didn't realize this was such an old post. Oops.

Edited by Zein

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