help with operator%

[Al-Burak]

In the program
--- money.hpp
namespace jme{
class Money{
protected: float amount;
...
public: friend jme::Money jme::operator%( jme::Money&,
jme::Money&);
};
}
--- money.cpp
jme::Money jme::operator%(jme::Money& lhs, jme::Money& rhs){
jme::Money tmp;
return tmp = lhs.amount % rhs.amount;
}

I get an error message, that reads:
Project : Money
Compiler : GNU GCC Compiler (called directly)
Directory : c:\money\
--------------------------------------------------------------------------------
Switching to target: default
Compiling: money.cpp
money.cpp: In function `jme::Money jme::operator%(jme::Money&,
jme::Money&)':
money.cpp:72: error: invalid operands of types `float' and `float' to
binary `operator
--------------------------------------------------------------------------------
What am I doing wrong?

[GB]

Al-Burak wrote:

protected: float amount; : return tmp = lhs.amount % rhs.amount; : What am I doing wrong?

You are attempting to use the '%' operator on floats. The operator can
be used only on integral types.

Gregg

[Mike Wahler]

"Al-Burak" <ja******@netscape.net> wrote in message
news:11**********************@g43g2000cwa.googlegr oups.com...

In the program
--- money.hpp
namespace jme{
class Money{
protected: float amount;
...
public: friend jme::Money jme::operator%( jme::Money&,
jme::Money&);
};
}
--- money.cpp
jme::Money jme::operator%(jme::Money& lhs, jme::Money& rhs){
jme::Money tmp;
return tmp = lhs.amount % rhs.amount;
}

I get an error message, that reads:
Project : Money
Compiler : GNU GCC Compiler (called directly)
Directory : c:\money\
--------------------------------------------------------------------------------
Switching to target: default
Compiling: money.cpp
money.cpp: In function `jme::Money jme::operator%(jme::Money&,
jme::Money&)':
money.cpp:72: error: invalid operands of types `float' and `float' to
binary `operator
--------------------------------------------------------------------------------
What am I doing wrong?

Your compiler just told you: you're trying to use
an operator with a type for which it's not valid.

-Mike

[zikaizhang]

Al-Burak wrote:
[slit]

--- money.cpp
jme::Money jme::operator%(jme::Money& lhs, jme::Money& rhs){
jme::Money tmp;
return tmp = lhs.amount % rhs.amount;
try fmod from <math.h>
double fmod(double x, double y);

return tmp.amount = fmod(lhs.amount, rhs.amount);
}

I get an error message, that reads:
Project : Money
Compiler : GNU GCC Compiler (called directly)

[slit]

[Greg Comeau]

In article <f6D5f.1445$mV4.1167@dukeread02>, GB <[e-mail]> wrote:

Al-Burak wrote:

protected: float amount;

:

return tmp = lhs.amount % rhs.amount;

:

What am I doing wrong?

You are attempting to use the '%' operator on floats. The operator can
be used only on integral types.

.... and enum's.
--
Greg Comeau / Celebrating 20 years of Comeauity!
Comeau C/C++ ONLINE ==> http://www.comeaucomputing.com/tryitout
World Class Compilers: Breathtaking C++, Amazing C99, Fabulous C90.
Comeau C/C++ with Dinkumware's Libraries... Have you tried it?

[Mike Wahler]

"Greg Comeau" <co****@panix.com> wrote in message
news:dj**********@panix1.panix.com...

In article <f6D5f.1445$mV4.1167@dukeread02>, GB <[e-mail]>
wrote:

Al-Burak wrote:

protected: float amount;

:

return tmp = lhs.amount % rhs.amount;

:

What am I doing wrong?

You are attempting to use the '%' operator on floats. The operator can
be used only on integral types.

... and enum's.

Is not 'enum' an integral type?

-Mike

[Greg]

Mike Wahler wrote:

"Greg Comeau" <co****@panix.com> wrote in message
news:dj**********@panix1.panix.com...

In article <f6D5f.1445$mV4.1167@dukeread02>, GB <[e-mail]>
wrote:

Al-Burak wrote:
protected: float amount;
:
return tmp = lhs.amount % rhs.amount;
:
What am I doing wrong?

You are attempting to use the '%' operator on floats. The operator can
be used only on integral types.

... and enum's.

Is not 'enum' an integral type?

No, an enum is not an integral type - although an enum may convert to
an integer value.

Greg

[Greg Comeau]

In article <de*****************@newsread3.news.pas.earthlink. net>,
Mike Wahler <mk******@mkwahler.net> wrote:

"Greg Comeau" <co****@panix.com> wrote in message
news:dj**********@panix1.panix.com...

In article <f6D5f.1445$mV4.1167@dukeread02>, GB <[e-mail]>
wrote:

Al-Burak wrote:
protected: float amount;
:
return tmp = lhs.amount % rhs.amount;
:
What am I doing wrong?

You are attempting to use the '%' operator on floats. The operator can
be used only on integral types.

... and enum's.

Is not 'enum' an integral type?

Not in C++, but can be _promoted_ to one.
--
Greg Comeau / Celebrating 20 years of Comeauity!
Comeau C/C++ ONLINE ==> http://www.comeaucomputing.com/tryitout
World Class Compilers: Breathtaking C++, Amazing C99, Fabulous C90.
Comeau C/C++ with Dinkumware's Libraries... Have you tried it?

[Greg Comeau]

In article <ma*******************************************@gnu .org>,
Simon Buchan <si***@hand-multimedia.co.nz> wrote:

Greg wrote:

Mike Wahler wrote:

"Greg Comeau" <co****@panix.com> wrote in message
news:dj**********@panix1.panix.com...
[enum is not an integral]
Is not 'enum' an integral type?

No, an enum is not an integral type - although an enum may convert to
an integer value.

enum is intergral, but not an integer, to be somewhat ambiguously precise.

Ambiguously precise? :)
Anyway, that's not so, so it's ambiguously imprecise :)
I suspect you're cross breading some terms with C previsely ambiguously.
--
Greg Comeau / Celebrating 20 years of Comeauity!
Comeau C/C++ ONLINE ==> http://www.comeaucomputing.com/tryitout
World Class Compilers: Breathtaking C++, Amazing C99, Fabulous C90.
Comeau C/C++ with Dinkumware's Libraries... Have you tried it?