EasyException.h

//Macro for simple base and inherited exception creation

#ifndef _EASY_EXCEPTION_H
#define _EASY_EXCEPTION_H

#include <exception>

#define EASY_EXCEPTION(NAME, WHAT) \
class NAME: public std::exception { \
public: \
    virtual const char* what() const noexcept { return WHAT; } \
};

#define EASY_INHERIT_EXCEPTION(NAME, BASE, WHAT) \
class NAME: public BASE { \
public: \
    virtual const char* what() const noexcept { return WHAT; } \
};

#endif

Example of usage

class ObjData {
    public:
        EASY_EXCEPTION(Exception, "Exception");
        EASY_INHERIT_EXCEPTION(FileException, Exception, "FileException")

        std::vector< Point3D<float> > vertices;

        static ObjData loadFile(const std::string& filename);
    };