Susquehanna International Group Interview Question: When using a virtual method, how does the machine know to call the derived class's implementation rather than the base class? (under the hood)

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Susquehanna International Group

Susquehanna International Group Technology Associate interview

Susquehanna International Group Interview Question

Technology Associate Interview

When using a virtual method, how does the machine know to call the derived class's implementation rather than the base class? (under the hood)

Interview Answers

Anonymous

Dec 2, 2010

virtual table in memory

Anonymous

Jan 29, 2011

All objects have an object ID embedded in them. So, the compiler generates code which dynamically binds the object ID to the right derived class's member function.

Susquehanna International Group interviews

Susquehanna International Group

Susquehanna International Group Interview Question

Interview Answers

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