My program keeps saying istream and ostream are not declared when I'm trying to create this class:
as you can see im including iostream, i also tried ios, istream & ostream and none work... any ideas?Code:#include <iostream> #ifndef TRANSPORT_H_ #define TRANSPORT_H_ class Transport{ public: Transport(); Transport(double cost); double get_cost() const; void set_cost(double c); virtual void output(ostream & outs) = 0; virtual void input(istream & ins) = 0; private: double cost; }; #endif
thanks