SystemwarePS interview questions

They seemed more interested in me and my background then my skill set. The last and final interview was with the CFO and he seemed like a angry and miserable person from the start. On the way up to his office, he screamed out at one of his employees which was shocking to say the least, especially as I am following up to his office for an interview. He's definitely not a guy I'd like to work for. He spent most of the interview talking about himself and other aspects of the business, but almost nothing regarding my potential job or position. Everyone seemed to love me except the CFO, and his final call was "im not right for the position" with absolutely zero other information or ANY feedback as to what happened or why he didn't think I would be a good fit. Honestly, one of the worst interviews I have ever been through. The entire 4 weeks was such a waste of time.

Describe how you apply code analysis to resolving an issue in someone else's original code?