Question

Which of the following control structures is an exit-controlled loop?

(a) For loop

(b) While loop

(c) Const and Goto

(d) Do-While loop

I have been asked this question in an interview.

This is a very interesting question from Control Structures in portion Arduino Programming of Arduino

Answer 1

The correct choice is (d) Do-While loop

To explain: An entry-controlled loop is a looping structure that performs the initialization, condition-checking, and increment/decrement operation at the beginning of the loop. So therefore, before a loop even starts to execute, a check is made if the condition is satisfied or not. In an exit controlled only the condition checking is done after the execution.