Learn the fundamentals of recursion in C programming language with Base case, Recursive case, Control flow with Practice problems Learn recursion in C programming and understand base cases, recursive calls, and types of recursion with examples like factorial and Fibonacci. Recursion is the technique of making a function call itself. This technique provides a way to break complicated problems down into simple problems which are easier to solve. Recursion may be a bit difficult to understand. The best way to figure out how it works is to experiment with it.