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multiple classes include-problem [message #14417]

Mon, 25 February 2008 22:35

michael
Messages: 153
Registered: May 2007
Location: Germany

Experienced Member

This seems to be a beginners-problem in understanding classes...

Lets say i have two classes and two header-files:

class1.cpp

#include "class1.h"

class1::class1()
{
//some code
}

class1.h

#ifndef _testapp_class1_h
#define _testapp_class1_h

using namespace Upp;

#include "class2.h"

class1
{
//some code
};

#endif

class2.cpp

#include "class1.h"

class2::class2()
{
//some code
}

class2.h

#ifndef _testapp_class2_h
#define _testapp_class2_h

using namespace Upp;

class2
{
//some code
};

#endif

Using MinGW compiling and linking went well, no errors, when using MSVC9 i get several "already defined" errors.

I'm sure this is no good class-design, but this was my only successful attempt to get the application running.

I need to access members of both classes in both classes.

How should a better class-design look like?

Thanks for helping.

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[Message index]

		multiple classes include-problem By: michael on Mon, 25 February 2008 22:35
		Re: multiple classes include-problem By: michael on Tue, 26 February 2008 10:22
		Re: multiple classes include-problem By: mrjt on Tue, 26 February 2008 11:14
		Re: multiple classes include-problem By: bytefield on Tue, 26 February 2008 14:03
		Re: multiple classes include-problem By: michael on Tue, 26 February 2008 16:14
		Re: multiple classes include-problem By: mrjt on Tue, 26 February 2008 16:39
		Re: multiple classes include-problem By: bytefield on Tue, 26 February 2008 16:54
		Re: multiple classes include-problem By: mrjt on Tue, 26 February 2008 17:12
		Re: multiple classes include-problem By: bytefield on Tue, 26 February 2008 17:25

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