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![Justin Reed](https://secure.gravatar.com/avatar/71ce51e6d3850b2bcd0c5a878431730a?s=96&d=https%3A%2F%2Fecs-static.teamtreehouse.com%2Fassets%2Fcontent%2Fdefault_avatar-445fbbabfc8dc9188fb5967fe43322ee0c3e0dd1e10f378bf8343784af5a13eb.webp&r=pg)
Justin Reed
Courses Plus Student 2,164 PointsHaving trouble with 'if' statement for control flow
I am trying to append all of the numbers from 1-100 that are both odd and a multiple of. This code is working fine in xcode, hoping somebody can point out what Im missing,
thanks Justin
var results: [Int] = []
for n in 1...100 {
if n % 2 != 0 && n % 7 == 0 {
results += [n]
}
}
2 Answers
![andren](https://secure.gravatar.com/avatar/229e60726cd92951c31d7303e40be2cd?s=96&d=https%3A%2F%2Fecs-static.teamtreehouse.com%2Fassets%2Fcontent%2Fdefault_avatar-445fbbabfc8dc9188fb5967fe43322ee0c3e0dd1e10f378bf8343784af5a13eb.webp&r=pg)
andren
28,558 PointsYour code is technically fine, this is just a case of the task checker being a bit picky and literal with it's checking.
It asks you to append the numbers to the list. You are actually concatenating them to the list. The effect of those two operations are the same but they are technically different.
To append to a list you use the append
method instead of +=. Like this:
var results: [Int] = []
for n in 1...100 {
if n % 2 != 0 && n % 7 == 0 {
results.append(n)
}
}
![Justin Reed](https://secure.gravatar.com/avatar/71ce51e6d3850b2bcd0c5a878431730a?s=96&d=https%3A%2F%2Fecs-static.teamtreehouse.com%2Fassets%2Fcontent%2Fdefault_avatar-445fbbabfc8dc9188fb5967fe43322ee0c3e0dd1e10f378bf8343784af5a13eb.webp&r=pg)
Justin Reed
Courses Plus Student 2,164 PointsThank you Andren!