C / C++ / MFC

minkowski wrote:

It just copies the address and does not involve using copy constructors?

minkowski wrote:

alpha * func()
{
alpha anything;
alpha *ptr = &anything;
return ptr;

}

how would it return ptr. Would it copy the pointer ptr using the copy constructor and then destroy it as the function goes out of scope?

// C2653.cpp
// compile with: /c
class yy {
   void func1(int i);
};

void xx::func1(int m) {}   // C2653
void yy::func1(int m) {}   // OK

// C2653b.cpp
namespace a::b {int i;}   // C2653

namespace a {
   namespace b {
      int i;
   }
}

int main() {
   a::b::i = 2;
}

---

The only programmers that are better than C programmers are those who code in 1's and 0's.....

Programm3r
My Blog: ^_^

#ifndef __A_VERY_LONG_AND_UNIQUE_NAME__
#define __A_VERY_LONG_AND_UNIQUE_NAME__
 
//your header code here
 
#endif

<br />
------------------------------<br />
try.h<br />
#include <br />
<br />
class TryIt {<br />
int i;<br />
<br />
public:<br />
void test(void);<br />
};<br />
------------------------------<br />
try.cpp<br />
#include "stdafx.h"<br />
#include "try.h"<br />
<br />
void TryIt::test() {<br />
int i = 5;<br />
}<br />
------------------------------<br />

cp9876 wrote:

if you are using precompiled headers stdafx.h must be first. This is probably not the issue as you would get a different error message, but probably good practice.

--Mike--
Visual C++ MVP
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Ford, what's this fish doing in my ear?

Michael Dunn wrote:

Everything before #include "stdafx.h" gets ignored by the preprocessor.

cp9876 wrote:

The problem with this is that when you edit the .CPP files and insert #includes, #defines, declarations, or other code before the "#include 'stdafx.h'" line, all of it is ignored by the compiler. This is the correct behavior because when the compiler is using the precompiled header, it starts to compile the code in the .CPP file after skipping past the "stdafx.h" line.

Mark Salsbery wrote:

Ok I gotcha. I was thinking of when the precompiled header is precompiled, everything
through the indicated file is precompiled

Mark Salsbery wrote:

(or sticking my nose in something not my
business, depending on how one looks at it).

cp9876 wrote:

By the way, what is a 'public class', I know that for nested classes you can have public / private etc, but in global scope? What would a private class do?

--Mike--
Visual C++ MVP
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Ford, what's this fish doing in my ear?