why for(;;) instead of while(1)?

Answer 1

There is no advantage to for(;;) over while(1). Use while(1), because it's easier to comprehend (imho). I've never seen a for(;;) used before, and it may be confusing to others who view your code, and may wonder the same thing you just asked.

EDIT: Here's a link: http://stackoverflow.com/questions/885908/while-1-vs-for-is-there-a-speed-difference

It basically says that they both generate the same code. In assembly, it's jmp ....

Answer 2

I personally prefer using while(2!=3){...} :-)

Answer 3

Less typing? It's shorter. And on a QWERTY keyboard, typing for alternates between the left and right hand, and while has three consecutive letters that are typed with the right hand, making typing it potentially even slower.