FourKites Software Engineer(Internship) interview questions

It's a cool interview he asked about my projects, and then some questions about dsa, networking, operating systems, and one logical problem solving question and then he asked me to write program for squaring a number without using inbuilt function that's it.

The shortlisting for rounds are done by an online test held for approximately 1.5 hrs with 50questions(MCQ) and 2 Coding Questions. After this round 5 candidates were selected. Round 1: This is the telephonic round. He asked me to introduce myself and then given 3 coding questions . This round lasts for 1 hour.