I had two interviews in one day, the first one was about team management and the second one was coding, the coding interview was somehow easy, I was asked to write a small function like the tail utility in Unix/Linux but the issue that I wasn't sure about what parameters read and seek functions take in c++, so I wrote half a program. It was my mistake, during the preparation, I didn't focus in files/streams, I thought questions would be focused on algorithms. I will give it another try very soon.