Systenics Solutions Software Developer Trainee interview questions

I attended the interview at this company through my college placement drive. It was on-site placement drive. First round was coding round. In first round they asked to write the logic/program to 'Check whether the given number is Armstrong number or not (in C/C++/JAVA)' for which 15 minutes were given you have to solve that on the backside of hard copy of your Resume. For the second round they will select candidate on the basis of result of first round.