Question

What is vtable in C++?

(a) Lookup table to resolve function calls in dynamic manners

(b) Lookup table to resolve function calls in static manners

(c) Lookup table to see which are the functions available for calls throughout the program

(d) Lookup table to check how many functions are there int he program

The question was posed to me in final exam.

My question comes from vtable and vptr in division Class Hierarchies, Library & Containers of C++

Answer 1

Correct option is (a) Lookup table to resolve function calls in dynamic manners

The explanation: vtable is a lookup table that is used to resolve the function calls in dynamic/late binding manners.