Difference between “while” loop and “do while” loop

Question

What is the difference between while loop and do while loop. I used to think both are completely same.Then I came across following piece of code:

do {
                


        

Answer 1

The most important difference between while and do-while loop is that in do-while, the block of code is executed at least once, even though the condition given is false.

To put it in a different way :

• While- your condition is at the begin of the loop block, and makes possible to never enter the loop.
• In While loop, the condition is first tested and then the block of code is executed if the test result is true.