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 and thus is a abstract class. How can i create .cxx file for this .hxx file?

Answer 1

This is not an abstract class. An abstract class contains a pure virtual function. For example , if you wanted to make your class abstract you could put virtual int getWidth() = 0; which would force the getWidth() function to be defined in a derived class.

It’s probably also worth mentioning that it’s not a good idea to put using statements in a header file. It pollutes the current namespace unnecessarily and can lead to naming conflicts.