I feel 10 is the correct answer due to the pre-increment operator having a higher precedence than the addition operator. This would mean both increments will be done before the addition (creating 5 + 5). Chris Original Message: ----------------- From: Willi Mann willi@xxxxxx Date: Fri, 15 Jun 2007 16:28:32 +0200 To: gcc-help@xxxxxxxxxxx Subject: increasing var twice in a statement Hi! Can anybody tell me what output the following program snippet should produce according to C standard: int main(void) { int a; int b; b = 3; a = ++b + ++b; printf("%d\n",a); return 0; } I would have expected 9, but gcc 4.1.2 produced a binary that wrote 10. Willi Please CC: me in replys, I'm not on the list. -------------------------------------------------------------------- mail2web.com ? What can On Demand Business Solutions do for you? http://link.mail2web.com/Business/SharePoint