Create Source file for Header file

Question

I have a file GetL.hxx

#ifndef GetL_included
#define GetL_included
#include <iostream>
using namespace std;
class GetL
{
 public:
    virtual int getWidth();
};
#endif //GetL_include

Here the class GetL contains only one virtual function. what should i put in source file i.e. in GetL.cxx

possible duplicate of [Create cxx file for hxx file in C++](http://stackoverflow.com/questions/9390953/create-cxx-file-for-hxx-file-in-c) — Bo Persson, Feb 22 '12 at 09:49
@user you should add an exclamation mark in the bottom comments. Because the code above it is *if not defined GetL_included* And the typo need fixing — Ade YU, Feb 22 '12 at 09:58

score 3 · Accepted Answer · edited May 23 '17 at 11:59

3

#include "GetL.hxx"

int GetL::getWidth() {
  // your code goes here
}

By the way, having using namespace std; in a header file is not a good practice.

edited May 23 '17 at 11:59

Community

1
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answered Feb 22 '12 at 09:19

NPE

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how can i `#include ` without having `using namespace std`?? – Rog Matthews Feb 22 '12 at 09:24
i want to create a virtual method so that GetL class can be inherited and getWidth method overridden. If i give implementation like that it will defeat the reason because of which i created it.. – Rog Matthews Feb 22 '12 at 09:26
If you `#include ` without `using namespace std`, you refer to the contents of iostream as within the std namespace. For example, you use `std::cout`, not just `cout`. This avoids polluting the global namespace. Nonetheless, you aren't using anything from the iostream header file so you don't need to include it. – Joseph Mansfield Feb 22 '12 at 09:42

Create Source file for Header file

1 Answers1