Is it possible for a program to modify its own code?

Yes, it is possible for a program to modify its own code, and this concept is known as "self-modifying code." However, the ability to modify one's own code is often restricted or discouraged in modern programming practices for several reasons:

Readability and Maintainability: Self-modifying code can be challenging to read and understand. Code that changes its own behavior dynamically can make it difficult for other developers (or even the original developer) to comprehend the program's logic.

Debugging: Debugging becomes more complex when code is capable of modifying itself. It's harder to predict the state of the program at any given point in time.