The interview process consisted of two technical rounds and one HR round, all of which followed the online assessment (OA).

I was rejected in the second technical round, where I was asked to code solutions for two problems.

Q1. How will you add two big numbers without overflow and show the result to the user?

Both numbers may exceed the 32-bit size of a register and may not be possible to add them directly.

Input: Two numbers given in string format.

Ex: A = "1234567890", B = "09876543321".

This is not like appending both, but we have to convert to integers and perform normal addition, then display the resulting sum.