First, there was an online test with two coding questions, followed by a technical interview. The interview started with a formal introduction, and the interviewer asked about my passion, etc. Then, they began asking basic questions on OOPS concepts. I was asked about many keywords in C and how they work, memory map, and variable storage. Following that, there was an HR interview where they inquired about my internship offers and my failed attempts.

Given an integer ‘K’ and a tree in string format, we need to print the sum of all elements at the Kth level from the root.