First was a 30-minute phone interview with the Student Program Manager. It goes over the basics of your qualifications and resume. If they feel there's a good match, you'll be invited for an onsite interview (I had gone to Connecticut for the onsite).

They pay for complete travel and hotel expenses and also reimburse later for additional expenses like meals, taxis, etc.

On the day of the onsite interview, you'll be interviewed by 3-5 people whom you'll be working with mostly. The first person to receive you will be the hiring manager in most cases.

My interview went really well with the first one, except for one point where I just forgot an answer that I knew, and I reacted childishly (that is what I think went wrong).

He would just ask you to code on a piece of paper and ask questions about basic C.

Then, the next round was with the same person with whom I had interviewed on the phone. He was good and sweet. That interview wasn't technical; it was more behavioral. He also took me on a tour of their work site there.

(P.S.: remember, ASML is not primarily a software company but a hardware-based semiconductor company, so you can't carve out a great software career there in years. This is purely my opinion).

After that, you'll have a third round of interview where questions related to coding and compiling of code will be asked again.

Overall, it was a good experience. Compensation for the intern position was fairly low, considering the position was in such an expensive area.

Pointers, memory allocation, code compiling.