Loop

Question

what is the difference between while and repeat-while

Answer 1

My bad you're right Kishalaya Saha
Then maybe he should check this lesson and comments
https://www.sololearn.com/learn/Swift/2341/

Answer 2

A case where I would use repeat while/do while is when I don't have the means to form my while-condition yet.

For example I want the user to choose between 'y' and 'n'. If he/she types anything else, I want to loop.

But initially I have nothing to check - the user needs to input first!

So I'd start with...

do {
... here I take the input...
} while (input != 'y' || input!= 'n');

Answer 3

I think in some languages (Swift?) the do-while loop is called repeat-while.