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Message: [QUOTE="Richard Bos, post: 2407747"] Note that in C99, implicit int is no longer legal; in that version of the language, you have to write int main(). int main(void) is better yet. Wherever do you get the idea that you _could_ see 5? There's nothing that gives i any value other than the default 0 that all static objects have. None whatsoever. The only differences, from the programmer's point of view, between a static and an automatic object are: 1. Statics are initialised to 0; automatic variables start out containing garbage unless you explicitly initialise them. This is relevant to the printf() above, since that relies on i _having_ a value, and not containing garbage; but it is of no importance to the for loop, since the first thing you do is give it another value. 2. Statics exist throughout the program's run, and retain their value between calls of the function they're in; automatics are destroyed and recreated every time their declarations are encountered, and get their initial value (or garbage) each time. Since i is in main(), and you don't call main() recursively, this is of no importance to your program; even if you did, it still wouldn't mean a thing to the for loop, since, again, you give i a new value first thing you do in the loop. Richard [/QUOTE]