What i want to type was this:

    int a = sizeof(int) + sizeof(double);

bat what i dit was this:

    int a = sizeof(int) sizeof(double);

Unfortunately there was no Compiler Error or Warning. Is there someone
who know this effect?

Arnold

Interesting (and bizarre.)  Happens in VC 4.0, too.  I have a feeling that this
will be one of those cases where ANSI say this should work for reasons that I
don't understand.  I've mailed a couple of gurus with this one; if they can
help, I'll post their response.

M

m.p.vc.mfc.docview removed from the newsgroups list, as it doesn't seem in the
least bit relevant to them.

--
   "It's the gaps between the rain that count,
     and learning how to live amongst them."
          -- Jeff Noon, _Pixel Juice_
Matt Gibson                          http://www.netgates.co.uk/mbmg001/

Interesting. The value assigned to a is the result of the leftmost
expression. Il you look at the assembly code, you'll see that the second
expression is merely ignored by the compiler:

    mov    dword ptr[ebp-4], 4

int a = 4 8; won't compile however but  int a = sizeof(int) 8; will compile.

The Borland compiler flags this syntax error in any case.

Patrick Philippot (MainSoft sarl)

http://ourworld.compuserve.com/homepages/mainsoft
tel/fax: +33 (0)1 69 40 94 85

Compiler interprets this like:
int a = sizeof((int)(sizeof(double)));

--
Rimantas Endriukaitis
=============================

=============================

endriu.vcf < 1K Download

Oh, bl**dy hell.  Of course it does.

M

--
   "It's the gaps between the rain that count,
     and learning how to live amongst them."
          -- Jeff Noon, _Pixel Juice_
Matt Gibson                          http://www.netgates.co.uk/mbmg001/

Hang on -- doesn't that suggest that:

int a = sizeof int;

should work?  Because it doesn't.

M

--
   "It's the gaps between the rain that count,
     and learning how to live amongst them."
          -- Jeff Noon, _Pixel Juice_
Matt Gibson                          http://www.netgates.co.uk/mbmg001/

And let me just diagree with myself: thanks to Rimantas Endriukaitis I now see
what's going on.

I think that the described behaviour is correct, according to ANSI.  If the
Borland compiler doesn't like it, I think the Borland compiler is wrong.
(incidentally, CodeWarrior and PC Lint both flag it as an error.)

Cheers,

M

--
   "It's the gaps between the rain that count,
     and learning how to live amongst them."
          -- Jeff Noon, _Pixel Juice_
Matt Gibson                          http://www.netgates.co.uk/mbmg001/

I'll bet that if you qualified the scope with enclosing parenthesis,
Borland, CodeWarrior, and Lint would accept it as a viable line of code.  
VC++ appears to actually be correct in it's interpretation of the code
since parenthesis' aren't *required* to properly parse the code.

--
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