Q: What is the difference between a while loop and a do-while loop in C++?

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

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Answer: 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.

While Loop in Programming Language

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Q: What is the difference between a while loop and a do-while loop in C++?

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