Iterative construct › While Loop in Programming Language › Question #23084
MCQ Single Best Answer Moderate

QWhat is the difference between a while loop and a do-while loop in C++?

ID: #23084 While Loop in Programming Language 106 views
Question Info
#23084Q ID
ModerateDifficulty
While Loop in Programming LanguageTopic
Start Quiz on This Topic
 Your Answer

Choose the Best Option

Click any option to instantly check if you're correct.

  • A A while loop always executes at least once ✔ ✖
  • B A do-while loop checks the condition before the loop ✔ ✖
  • C A do-while loop executes at least once ✔ ✖
  • D A while loop can only be used with integers ✔ ✖
Correct Answer: Option C

Explanation

The key difference between a while loop and a do-while loop is that a do-while loop guarantees that the loop's body will execute at least once, even if the condition is false from the beginning. In a while loop, the condition is checked first, so if the condition is false initially, the loop body may never execute. This makes the do-while loop useful for situations where you need the loop to run at least once, regardless of the condition. In contrast, a while loop only runs if the condition is true.

 Continue Practice
Previous Question Next Question
 Share

Share This Question

Challenge a friend or share with your study group.

 More from This Topic

Related MCQ Questions

What happens if the condition in a while loop is never false? What happens if you forget to include a condition that changes in a while loop? Which of the following statements will exit a while loop in Java? What is the main advantage of using a while loop? In which scenario would you use a while loop instead of a for loop? What is the correct syntax for a while loop in Python? How can you avoid an infinite loop in a while loop? How many times will the following while loop execute? <pre class = "prettyprint"><xmp> Which of the following languages does not support a do-while loop?