how to repeat a program using do while loop?

Answer 1

The while loop loops through a block of code as long as a specified condition is True:

while (condition)
{
// code block to be executed
}

more info: https://www.w3schools.com/cs/cs_while_loop.as

Answer 2

Repeat the whole program or some parts of it?

do...while loop is covered in the lesson. Maybe take a review on it?

Answer 3

repeat whole program