Re: printf and cout

[Mark McIntyre]

Richard Heathfield wrote:
> laikon said:
>
> > Hello, everyone:
> >
> > this is about overflow in C and C++.
>
> The behaviour of a C program on overflow is undefined.
>
> > int c = 400;
> > printf("%c", c);
> >
> > it print ? on screen,
>
> Not necessarily. C doesn't guarantee you a screen, and it says very little 
> about the character set supplied by your implementation.
>
> > and ascii of '?' is 63.
>
> This is irrelevant, I think. If by some chance you'd seen the character 
> with code point 144 (which is, of course, *not* an ASCII character), I'd 
> have been able to explain it in concrete terms. I am a little puzzled by 
> the 63, actually. 

Its not printing 63, its just printing "?" to mean "I don't know how to 
represent a value outside the characterset this screen uses".