How Virtual Table and Virtual Table works in C++

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Hi,

I have a question. And I am not able find any relevant answer on Google. My question is How Virtual Function mechanism works. Means what exactly happens at compile time, what exactly happens at run time and how pure virtual functions are stored in VTable.

And exactly how Pure Virtual Function makes a class abstract.

Thanks

Posted 25-Mar-12 21:54pm

Pranit Kothari

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Sergey Chepurin 26-Mar-12 6:14am

From highly recommended tutorial -
"Virtual functions": http://www.learncpp.com/cpp-tutorial/122-virtual-functions/ and
"Virtual tables": http://www.learncpp.com/cpp-tutorial/125-the-virtual-table/

VikramRathod 18-Jul-12 7:02am

Link provided by Sergey Chepurin is so nice , its very simple to understand.

2 solutions

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Chandrasekharan P · Accepted Answer · 2012-03-25T22:08:00

Solution 1

Try this link. CPians have clearly explained about Virtual Functions [^]

Have a look at this also [^]

Posted 25-Mar-12 22:08pm

Chandrasekharan P

Updated 25-Mar-12 22:11pm

v4

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[no name] 26-Mar-12 8:38am

Thanks 5!.

CPallini · Accepted Answer · 2012-03-25T22:20:00

Solution 2

You may find precious info at C++ FAQ's "[20] Inheritance — virtual functions"[^].

Posted 25-Mar-12 22:20pm

CPallini

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[no name] 26-Mar-12 8:38am

Good Q/A 5!