rojart, both versions are a bit too "much", as expression you only need something that evaluates the whole time to true, eg. anything non 0.
Like:
function main(){
int i;
for (i = 0; 1; i++){
printf("%i",i);
if (i >= 10)
break;
}
}
(This is also what the C standard describes what a compiler should insert in the case a user leaves the field blank)
Edit: The loop will increase the iterator at the end of the loop, before evaluating the expression again. So your second code sample is completely wrong.
