[Flipside]

Hi, I'm new to C++ and I'm having troubles creating an instance of a class and then passing it.

I have a class called Sphere, and within it I have different attributes (actually just one at the time).

Sphere.cpp:

#include "sphere.h"

Sphere::Sphere(double arg_r) {
	radius = arg_r;  //Radius is defined in sphere.h as a double
}

In my main class, I want to create a new "sphere". (Not sure if this is even right).

Then I want to pass this instance of Sphere to ExampleClass.

Main.cpp:

int main(int argc, char* argv[]) {
	Sphere sphere = Sphere(1.0);

	ExampleClass ex = ExampleClass(sphere);

	return 0;
}

ExampleClass.cpp:

#include "exampleclass.h"
#include "sphere.h"

ExampleClass::ExampleClass(Sphere s) {
   // Some code that will use Sphere s
}

I've tried doing this (or variations close to this) and haven't had any success. I was hoping someone couldn't straighten things out for me.

[eker676]

Try making the sphere a reference in ExampleClass::ExampleClass(Sphere s)

Like this:

ExampleClass::ExampleClass(Sphere& s);

Then it doesn't call the copy constructor from the Sphere class.

[Flipside]

eker676, on 6 Aug, 2009 - 06:47 PM, said:

Try making the sphere a reference in ExampleClass::ExampleClass(Sphere s)

Like this:

ExampleClass::ExampleClass(Sphere& s);

Then it doesn't call the copy constructor from the Sphere class.

Thanks, I'm fighting with some other stuff right now so I can't say how it went yet.