#ifndef complexheader_h #define complexheader_h #include //program library #include //program library #include //program library class complex //class declaration { private: double real, imagine; //data members for class friend void multiply ( complex x, complex y ); friend void sub ( complex x, complex y ); friend void add ( complex x, complex y ); public: void getvalues(); //member functions for the class void printvalues(); }; #endif //end of header