whats the difference between while abd do while

Question

How we decide which to use under what circumstances?

Answer 1

do while loops will always run atleast once.

Answer 2

A while loop will check the condition before running the code, and a do-while loop will check the statement after running the code; meaning that no matter what, the code for a do-while loop will always run at least once.

Answer 3

While and do while loop is smillar, except that do while loop is guaranteed to be executed at least 1 time, even when condition on a first time is false.