Today as usual there was seminar in my college. One of my classmates was giving presentation on QR code. It was interesting topic and his presentation was good. He generated QR code for my college website and made it worked (None of my classmates took efforts to do so.) As a token of appreciation i started to clap.(I did not interrupted him. He was not talking at that time. He was showing the results). My teachers started scolding me about that. I told them that it was just a appreciation. Was that wrong ? Is it wrong to appreciate the effort taken by him. In my view, Appreciating and supporting the presenter feels them good and encourages them to do much more better. Please reply whether i was wrong or right ? I need your help very badly.