What does the "explicit" keyword do?

What is a virtual function in C++?

What is the time complexity of delete the first variable in a deque object (e.g., deque<int> a;)?

Suppose int * a = new int[3]; How would you deallocate the memory block pointed by a?

Which operator cannot be overloaded by a class member function?

Which of the following statements uses a Lambda expression?

What does auto type specifier do in this line of code (since C++11)? auto x = 4000.22;

What is an lvalue?

Which of the following is not a difference between a class and a struct?

Which of the following operators is overloadable?

What's a benefit of declaring the parameter as a const reference instead of declaring it as a regular object? int median(const my_array& a);