infinite for-loop and related question

[Bob Plantz]

On 02/16/2011 12:41 PM, Jason Mancini wrote:
> Though I still find the output of this odd:
>
>    for (char i(1); i>0; ++i)
>      printf("%d %d\n", i, sizeof(i));
>
> ...
> 362195 1
> 362196 1
> 362197 1
> ...
>
> For very large values of char!  ^_^
>
> Jason
That's odd. With g++ 4.4.5 on an x86-64 machine in 64-bit mode I get:

---
125 1
126 1
127 1

which is what I would expect. That is, i is a (signed) char, and when it goes over 127 it becomes a negative number, so the loop terminates.

--Bob