Why the result is -1 for the below operation?

Question

int a = 1;
printf("%d", (--a + a++ + a++ + --a));

Can anyone please explain how to apply stack concept for this?

Answer 1

Actually it depends on the compiler. Multiple shortcut statements in one row lead to unexpected behavior.

Answer 2

according the solo compiler the result of this experience is "3" . I think it make sence , because there is more operation '+' and postincrement is done

Answer 3

sbkrish What's the original value of int a?