What is the ans of a++ + ++a if a =10

Question

fast

Answer 1

actually in my book it is written that it will be undefined because it will show different results in different compilers

Answer 2

http://stackoverflow.com/questions/4176328/undefined-behavior-and-sequence-points/4176333#4176333

Answer 3

Let's break it down, step by step:

- a++ will first use the value of a, which is 10, and then increment it
- next, ++a will first increment the value of a, and then use it

So if we substitute a, we will have:

10 + 12 = 22