One 45-minute phone interview followed by an on-site interview with three team members.

The phone interview was quite easy. It included standard technical C++ questions related to exceptions (what happens when a destructor or constructor throws one, what are virtual functions, etc.). Nothing was very difficult. The interviewer also asked about C++ books and important C++ people or blogs I follow.

The in-person interview went well, I thought. The first interviewer asked me to implement merge sort. Another question was to find the k largest values in a very big vector efficiently. The second interviewer asked me to design an interface for a function (or a class) that finds a zero of a given function, and he wanted to see the most general interface possible. The third interviewer, the person I had the phone interview with, asked me about smart pointers and writing an exception-safe assignment operator. All three were very nice and guided me through the process. I did stumble on a few of the questions but eventually ended up answering all of them.

C++ template metaprogramming (that team was into functional programming and compile-time computations).

Standard: Find the nth Fibonacci number using recursive templates.