It's okay, pretty ordinary, nothing spectacular. I don't think the interviewers were very coherent. In the sense, I doubt if they shared their feedback between themselves while the interviews were in progress, at least, it didn't seem like it.
Booster code in C: Working example
The following metrics were computed from 35 interview experiences for the Yahoo Senior Software Engineer role in United States.
Yahoo's interview process for their Senior Software Engineer roles in the United States is fairly selective, failing a large portion of engineers who go through it.
Candidates reported having mixed feelings for Yahoo's Senior Software Engineer interview process in United States.