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 2.0 Functions Function Parameters Function Scope

How does the B value become 21 even if we decrement the value of B by writting b-- in the scope

scope

1 Answer

Hello,

The value of b does not become 21. The compiler shows that the code has been run 21 times , not that the number is literally 21.

b starts decrementing at 20 and is going till is greater than or equal to zero ( b >=0 ) which is 21 times.

Hope this helps.