I believe there may be a problem here.

using namespace std;
class CBox
{
   public:
      CBox(double lv = 1.0, double bv = 1.0, double hv = 1.0)
                : m_Height(hv), m_Length(lv), m_Breadth(bv)
      { }
   private:
      double m_Length;
      double m_Breadth;
      double m_Height;
};
int main()
{
    CBox aBox = 2;                               //OK
    CBox bBox = aBox;                        //OK
    CBox cBox = 2 < 3 ? aBox : 3;      // ERROR
}

 C:\dm\bin\sc -Ae -C -WA -S -5 -a8 test2.cpp -I\dm\stlport\stlport
    CBox cBox = 2 < 3 ? aBox : 3; //Burp
                                ^
test2.cpp(21) : Error: illegal operand types
Had: CBox
and: int
--- errorlevel 1

Jim Jennings wrote:

> I believe there may be a problem here.
> 

	.
	.

>     CBox cBox = 2 < 3 ? aBox : 3;      // ERROR

	.
	.

I'm not a C syntax specialist but it seems to me some parentesis are missing here. I personaly would have written this that way:

CBox cBox = (2 < 3) ? aBox : 3;

Certainly is. The 2 < 3 should be parsed correctly, and the 2nd 3 should be implicitly converted to a CBox. CodeWarrior compiles this without issue.

"Jim Jennings" <jwjenn@mindspring.com> wrote in message news:b6mq4c$12as$1@digitaldaemon.com...
> I believe there may be a problem here.
>
> using namespace std;
> class CBox
> {
>    public:
>       CBox(double lv = 1.0, double bv = 1.0, double hv = 1.0)
>                 : m_Height(hv), m_Length(lv), m_Breadth(bv)
>       { }
>    private:
>       double m_Length;
>       double m_Breadth;
>       double m_Height;
> };
> int main()
> {
>     CBox aBox = 2;                               //OK
>     CBox bBox = aBox;                        //OK
>     CBox cBox = 2 < 3 ? aBox : 3;      // ERROR
> }
>
>  C:\dm\bin\sc -Ae -C -WA -S -5 -a8 test2.cpp -I\dm\stlport\stlport
>     CBox cBox = 2 < 3 ? aBox : 3; //Burp
>                                 ^
> test2.cpp(21) : Error: illegal operand types
> Had: CBox
> and: int
> --- errorlevel 1
>
>

"Matthew Wilson" <dmd@synesis.com.au> wrote in message news:b6nl2n$1m3e$1@digitaldaemon.com...
> Certainly is. The 2 < 3 should be parsed correctly, and the 2nd 3 should
be
> implicitly converted to a CBox. CodeWarrior compiles this without issue.

I checked it out with g++ and Borland, and they both compiled OK. I try to
do that with all of the anomalies first. I find that often it is me and not
the compiler.
BTW, I thought I had deleted the "Burp" but forgot that I had recompiled
with the comment still there.
Thanks for the confirmation.
Jim J.
>
> "Jim Jennings" <jwjenn@mindspring.com> wrote in message news:b6mq4c$12as$1@digitaldaemon.com...
> > I believe there may be a problem here.
> >
> > using namespace std;
> > class CBox
> > {
> >    public:
> >       CBox(double lv = 1.0, double bv = 1.0, double hv = 1.0)
> >                 : m_Height(hv), m_Length(lv), m_Breadth(bv)
> >       { }
> >    private:
> >       double m_Length;
> >       double m_Breadth;
> >       double m_Height;
> > };
> > int main()
> > {
> >     CBox aBox = 2;                               //OK
> >     CBox bBox = aBox;                        //OK
> >     CBox cBox = 2 < 3 ? aBox : 3;      // ERROR
> > }
> >
> >  C:\dm\bin\sc -Ae -C -WA -S -5 -a8 test2.cpp -I\dm\stlport\stlport
> >     CBox cBox = 2 < 3 ? aBox : 3; //Burp
> >                                 ^
> > test2.cpp(21) : Error: illegal operand types
> > Had: CBox
> > and: int
> > --- errorlevel 1
> >
> >
>
>

"roland" <--rv@ronetech.com> wrote in message news:3E8EF4C8.3050203@ronetech.com...
> Jim Jennings wrote:
>
> > I believe there may be a problem here.
> >
>
> >     CBox cBox = 2 < 3 ? aBox : 3;      // ERROR
>
> I'm not a C syntax specialist but it seems to me some parentesis are missing here. I personaly would have written this that way:
>
> CBox cBox = (2 < 3) ? aBox : 3;
>

roland,
< has a higher operator precedence than ?: Here is the result with
parentheses:

C:\dm\bin\sc -Ae -C -WA -S -5 -a8 test2.cpp -I\dm\stlport\stlport
    CBox cBox = (2 < 3) ? aBox : 3;
                                  ^
test2.cpp(24) : Error: illegal operand types
Had: CBox
and: int
--- errorlevel 1

Pleasure

"Jim Jennings" <jwjenn@mindspring.com> wrote in message news:b6nusl$1t62$1@digitaldaemon.com...
>
> "Matthew Wilson" <dmd@synesis.com.au> wrote in message news:b6nl2n$1m3e$1@digitaldaemon.com...
> > Certainly is. The 2 < 3 should be parsed correctly, and the 2nd 3 should
> be
> > implicitly converted to a CBox. CodeWarrior compiles this without issue.
>
> I checked it out with g++ and Borland, and they both compiled OK. I try to do that with all of the anomalies first. I find that often it is me and
not
> the compiler.
> BTW, I thought I had deleted the "Burp" but forgot that I had recompiled
> with the comment still there.
> Thanks for the confirmation.
> Jim J.
> >
> > "Jim Jennings" <jwjenn@mindspring.com> wrote in message news:b6mq4c$12as$1@digitaldaemon.com...
> > > I believe there may be a problem here.
> > >
> > > using namespace std;
> > > class CBox
> > > {
> > >    public:
> > >       CBox(double lv = 1.0, double bv = 1.0, double hv = 1.0)
> > >                 : m_Height(hv), m_Length(lv), m_Breadth(bv)
> > >       { }
> > >    private:
> > >       double m_Length;
> > >       double m_Breadth;
> > >       double m_Height;
> > > };
> > > int main()
> > > {
> > >     CBox aBox = 2;                               //OK
> > >     CBox bBox = aBox;                        //OK
> > >     CBox cBox = 2 < 3 ? aBox : 3;      // ERROR
> > > }
> > >
> > >  C:\dm\bin\sc -Ae -C -WA -S -5 -a8 test2.cpp -I\dm\stlport\stlport
> > >     CBox cBox = 2 < 3 ? aBox : 3; //Burp
> > >                                 ^
> > > test2.cpp(21) : Error: illegal operand types
> > > Had: CBox
> > > and: int
> > > --- errorlevel 1
> > >
> > >
> >
> >
>
>

In article <b6nl2n$1m3e$1@digitaldaemon.com>, Matthew Wilson says...
>
>Certainly is. The 2 < 3 should be parsed correctly, and the 2nd 3 should be implicitly converted to a CBox. CodeWarrior compiles this without issue.

Other than another compiler being able to compile this, the form of the statement violates the rules expressed in 5.16.3 for conversion of expressions in the conditional operator.

You can fixup the code like:

CBox cBox = (2 < 3) ? aBox : CBox(3);

Richard