Welcome to the Treehouse Community

Want to collaborate on code errors? Have bugs you need feedback on? Looking for an extra set of eyes on your latest project? Get support with fellow developers, designers, and programmers of all backgrounds and skill levels here with the Treehouse Community! While you're at it, check out some resources Treehouse students have shared here.

Looking to learn something new?

Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and join thousands of Treehouse students and alumni in the community today.

Start your free trial

iOS Swift Basics (retired) Control Flow For-In Loop

Posted by Alia Khan
Alia Khan
3,733 Points

for in loops

Jhoan Arango

Hi thanks for answering my question whilst it helped me with what for in loops do im still stuck on the println bit why cant I just enter the number * 7

Thanks its so confusing thinking of leaving it tbh

for_loops.swift 
for number in 1...10{
println("number * 7 )

             }

1 Answer

Jhoan Arango
Jhoan Arango
14,575 Points
Jhoan Arango
Jhoan Arango
14,575 Points

Hello:

That's where string interpolation comes in play. Anything you put between quotes will be read as a string.

for number in 1...10{
println("\(number) times 7 is equals to \(number * 7)")
}

Try something like this.

Good luck.

Alia Khan
Alia Khan
3,733 Points

hi thanks I managed to answer the question with the help of Logan R but its still quite confusing as theres so many () and "" how do you know where they go I always get them wrong also both your code is different how is that possible ? yours is in letters does that men theres more than one way to write it

for number in 1...10 { println("(number) * 7 = (number * 7)") }

THank you :)