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 Objective-C Basics (Retired) Fundamentals of C Operators and Expressions

confused

Why does c = 9 and a = 10 if c = a++?

2 Answers

When you put the ++ after, you increment the variable after you assign it to some other variable. When you put the ++ before, you increment the variable before you assign it.

Robert Goddard
Robert Goddard
15,019 Points

It has to do with where the ++ is. I believe since the ++ is after the a, c is assigned to BEFORE a is incremented. If you want c to equal 10, I believe you can do c = ++a . Then both will be equal to 10.