Repeat While - Swift Programming

repeat while runs the loop body once before checking the condition.

Run once before testing

repeat_while.swift

let start = 
var countdown = start
var ticks = 0

repeat {
    ticks = ticks + 1
    countdown = countdown - 1
} while countdown > 0

print("start=\(start)")
print("ticks=\(ticks)")

let start = 
var countdown = start
var ticks = 0

repeat {
    ticks = ticks + 1
    countdown = countdown - 1
} while countdown > 0

print("start=\(start)")
print("ticks=\(ticks)")

let start = 
var countdown = start
var ticks = 0

repeat {
    ticks = ticks + 1
    countdown = countdown - 1
} while countdown > 0

print("start=\(start)")
print("ticks=\(ticks)")

repeat while A `repeat while` loop is useful when the body must execute at least once, even if the condition becomes false immediately.