/* This header can be read by both C and C++ compilers */
#ifndef FRED_H
#define FRED_H
#ifdef __cplusplus
    class Fred {
        public:
            Fred();
            void wilma(int);
        private:
            int a_;
    };
#else
    typedef struct Fred Fred;
#endif
#ifdef __cplusplus
extern "C" {
#endif
#if defined(__STDC__) || defined(__cplusplus)
    extern void c_function(Fred*);   /* ANSI C prototypes */
    extern Fred* cplusplus_callback_function(Fred*);
#else
    extern void c_function();        /* K&R style */
    extern Fred* cplusplus_callback_function();
#endif
#ifdef __cplusplus
}
#endif
#endif /*FRED_H*/