Aloha Technology interview questions

First one was to see if a number is prime or not and follow up upon that was given a number (if it is prime - then print is prime) and if not a prime to print all the factor of that number.Since I created functions for each operation I was asked to not use static keyword for function declaration and so had to create an object for class and use the method. In the end was asked normal OOPS concepts.

1. what is inheritance? 2. write a program for split the given sentence 3. reverse the sentence