They started with a few very lengthy emails about how the interviews were difficult and asked a lot of questions.

Next, I went to a technical screening interview where I was asked to do some whiteboard problems and then code the solution in Vim and use GDB to debug it within the hour, which I passed.

Following that was a second technical screening interview that involved some very, very in-depth questions about C programming. I did not perform well enough on this to pass into the HR interview afterwards.

(second interview)

Given the code:

c void increment( ) { static int i = 0; return ++i; }

int main(void) { printf("%d %d", increment( ), increment( ) ); }

What would the output be? How would you change printf to output them in the right order?

(second interview)

Design and implement a homogeneous stack in C/C++.

(first interview)

Design and implement a circular queue in C.