What does this function do? auto buff = new char[50]; Std::memset(buff,20,50);

Consider a class named CustomData. Which choice is a correct declaration syntax to overload the postfix ++ operator as a class member?

What is the purpose of a destructor?

Which STL class is the best fit for implementing a phonebook? Suppose each entry contains a name and a phone number, with no duplicates, and you want to have lookup by name.

What is the main difference between these two Functions? std::mutex::lock() Std::mutex::try_lock()

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

What will 'int a = 'a';' do?

std::vector<int> v(4); std::fill(v.begin(), v.end(), 4); What is the content of vector v?

In C++, a comment can only be specified with a leading //.

What is the difference between a class and a struct

What does the sizeof(arg) operator do?