Operator not found for the type

[The Cool Giraffe]

I tried to define an overloader for the operator <<. My source

code is great except the stupid compiler doesn't get it. :)

std::ostream& Particle::operator<< (Particle& part) {

std::ostream* ost = NULL;

(*ost) << "diffusion particle";

return (*ost); }
The error message is
error C2679: binary '<<' : no operator found which takes a right-hand
operand of type 'Particle' (or there is no acceptable conversion)
What did i do unsmartly?

--
Vänligen Kerstin Viltersten
(The Cool Giraffe)

[Ian Collins]

The Cool Giraffe wrote:

I tried to define an overloader for the operator <<. My source

code is great except the stupid compiler doesn't get it. :)

std::ostream& Particle::operator<< (Particle& part) {

std::ostream* ost = NULL;

(*ost) << "diffusion particle";

return (*ost); }
The error message is
error C2679: binary '<<' : no operator found which takes a right-hand
operand of type 'Particle' (or there is no acceptable conversion)
What did i do unsmartly?

Don't make the operator a member function, use

std::ostream& operator<<( std::ostream&, const Particle& ) {..}

--
Ian Collins.

[Ron Natalie]

Ian Collins wrote:

The Cool Giraffe wrote:

>I tried to define an overloader for the operator <<. My source

code is great except the stupid compiler doesn't get it. :)

std::ostream& Particle::operator<< (Particle& part) {

std::ostream* ost = NULL;

(*ost) << "diffusion particle";

return (*ost); }
The error message is
error C2679: binary '<<' : no operator found which takes a right-hand
operand of type 'Particle' (or there is no acceptable conversion)
What did i do unsmartly?

Don't make the operator a member function, use

std::ostream& operator<<( std::ostream&, const Particle& ) {..}

It's not the source of the compile error, but he also is dereferencing
a null pointer for unexplained reasons.