I had a phone screening in July. The questions were almost entirely technical C++ questions, including STL questions. Some were expected:

• Difference between class and struct?
• I declare an empty class, what's in it?
• Tell me about static.
• Tell me about virtual.
• Difference between passing a variable and passing a reference: which is faster? Is passing a reference always faster?
• What's a map? If I define the key as a class, what needs to be defined?

What is the difference between override and overload?

What are the different casting keywords in C++?

If I declare a class with a virtual function, what special function should also be declared virtual and why?

Tell me about const. Can non-member functions be const?