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iOS Swift Basics (retired) Control Flow While and Do-While Loop

Posted by JACK TIRAKYAN
JACK TIRAKYAN
554 Points

Wait Loop Challenge Task: The error just says Bummer Try again. Can some one show % explain this one to me. Plz

s

while_loops.swift 
let numbers = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10]

var index = 0 
while index < numbers.count {
index++ 
println(numbers[index])

}

1 Answer

Stone Preston
Stone Preston
42,016 Points
Stone Preston
Stone Preston
42,016 Points

you need to increment AFTER you print. you generally increment at the very end of a while loop

let numbers = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10]

var index = 0 
while index < numbers.count {

println(numbers[index])
index++ 

}

with your current code 

while index < numbers.count {
index++ 
println(numbers[index])

}

before the loop runs index is set 0. however the first time it runs it gets to the first line and index gets incremented to 1 immediately, which means that the number at index 0 never gets printed.

JACK TIRAKYAN
JACK TIRAKYAN
554 Points

thank you again Stone, you da' man!

Stone Preston
Stone Preston
42,016 Points
Stone Preston
Stone Preston
42,016 Points

no problem, and thanks!