Dear Candidate,

Recursion is the process which comes into existence, when a function calls a copy of itself to work on a smaller problem. Any function which calls itself is called a recursive function, and such function calls are called recursive calls. Recursion involves several numbers of recursive calls. However, it is important to impose a termination condition of recursion. Recursion code is shorter than iterative code however it is difficult to understand.

Data Structures in C are used to store data in an organised and efficient manner. The C Programming language has many data structures like an array, stack, queue, linked list, tree, etc. A programmer selects an appropriate data structure and uses it according to their convenience.

If you want to know about Recursion and Data structures in brief, then you can use online resources for that. You can use You Tube, Udemy, Unacademy for that. Both, these are very important topics.

Hope this helps.