ThisExample

[Ernest]

not sure what is going on but my Dev C++ Freezes every time I try to compile ThisExample

class Example
{
      int x;
  public:
      Example(int a)
      {
           x = a;
      }
      void setValue(int);
      void printAddressAndValue();
};
#include "ThisExample.h"
#include <iostream>
using namespace std;

//**************************************************************
// Set value of object.                                        *
//**************************************************************
void Example::setValue(int a)
{
     x = a;
}
//**************************************************************
// Print address and value                                     *
//**************************************************************
void Example::printAddressAndValue()
{
     cout << " The object at address " << this << " has "
          << "value " << (*this).x << endl;
}
//This program illustrates the this pointer..
#include <iostream>
#include "ThisExample.h"
using namespace std;

int main()
{
    Example ob1(10), ob2(20);
    
    // Print the addresses of the two objects.
    cout << "Address of objects are " << &ob1
         << " and " << &ob2 << endl;
         
    // Print the addresses and values from within
    ob1.printAddressAndValue();
    ob2.printAddressAndValue();
    
     system("PAUSE");
  return EXIT_SUCCESS;
}

Is there something I am doing wrong?

[bl4ckb3rry]

Code looks fine....I just compiled it in Visual Studio 2010, and it ran fine, so I don't know what the problem is...Btw, did you put lines 1-30 into file "ThisExample.h"?

[Ernest]

no didn't put it into a .h file can't I run it all in one file? I don't need to make a seperate .h file do I ? Thought there was a way to run it in the .cpp file as well.

[Athar]

Your mistake is using Dev-C++. Use Code::Blocks or VS.

[Ernest]

ok this is what I tried to compile for a .h file by its self.

class Example
{
      int x;
  public:
      Example(int a)
      {
           x = a;
      }
      void setValue(int);
      void printAddressAndValue();
};
#include "ThisExample.h"
#include <iostream>
using namespace std;

//**************************************************************
// Set value of object.                                        *
//**************************************************************
void Example::setValue(int a)
{
     x = a;
}
//**************************************************************
// Print address and value                                     *
//**************************************************************
void Example::printAddressAndValue()
{
     cout << " The object at address " << this << " has "
          << "value " << (*this).x << endl;
}

and it gets stuck

[anonymous23323124]

You can't compile a .h file by itself. At least, you shouldn't. Header (.h, .hpp, etc.) files are meant only to be #include d in source (.cpp, etc.) files, which are compiled.

I second Athar on this. Especially since bl4ckb3rry got it to work in Visual Studio. DevC++ is buggy abandonware with an outdated compiler version. See this thread for details:
http://cplusplus.com/articles/36vU7k9E/

As an alternative, I would suggest Code::Blocks http://www.codeblocks.org/

[Ernest]

dev offers stability. I have Visualstudio and it takes soooooooo. long to load. I can get it done just as fast on Dev.

[LB]

_{Xander314 wrote:}

See this thread for details:
http://cplusplus.com/articles/36vU7k9E/

[anonymous23323124]

I understand your issues with leaving behind an IDE which you've become so used to, but the problem is that DevC++ won't offer you stability in the long term. It has a lot of outstanding bugs.

On the other hand, Visual Studio is fairly resource heavy as IDEs go. But Code::Blocks should be nice and fast.

[Ernest]

ThisExample.h:2: error: redefinition of `class Example'
pr11-1.cpp:2: error: previous definition of `class Example'

used Code::Blocks 10.05
and still comming up with the errors above.

looks to me it has something to do with the class Example

[Athar]

Well yeah, you first declare the class Example and then you're including ThisExample.h, which also declares it.

[Moschops]

dev offers stability

It's broken and it will never be fixed. That is stability, and clearly it's a bad thing in this case. Don't think that stable == good.