postfix operator problem

[P e t e r]

Following code works well when compiled with Microsoft c-compiler : j = 0; j = (j < 1) ? j++ : 0; --> result j = 1 When compiled with Microsoft c++ compiler --> result = 0 (wrong) Can somebody explain this?

[Jon]

0 is correct, use ++j if you want j to be incremented before being assigned back to itself. You get 0 because C++ create a temporary (j) variable and increments it (and discards it in this case), where as C doesn't bother (I think).

[Mike Dunn]

Well, the correct answer is 0. The assignment reduces to: j = j++; Since j++ evaluates to 0, 0 gets stuffed in j. This is really bad programming practice, though. I hope you don't plan on writing production code this way. ;)