Question

Which of the following can improve the quality and the structure of a code?

(a) polling

(b) subroutine

(c) sequential code

(d) concurrent code

I got this question in an international level competition.

My question is from Introduction of Interrupts in portion Interrupts and Exceptions of Embedded Systems

Answer 1

The correct answer is (b) subroutine

For explanation I would say: The subroutine can improve the quality and the structure of the code. By using the polling method, as the complexity increases the software structure rapidly fall and it will become inefficient. So the subroutine method is adopted.