a_Burhan Posted March 25, 2009 Share Posted March 25, 2009 i have two classes student and courses in my code i add any number of student with numbers to everyone and add any number of courses with numbers to every course. i do it by arrays >>>>> student stu[] ; after add that ... i want to asign number of student to number of course how can i do that ??? linking two classes ??? in C++ of course visual studio 2003 Link to comment Share on other sites More sharing options...
0 a_Burhan Posted March 25, 2009 Author Share Posted March 25, 2009 i have two classes student and courses in my code i add any number of student with numbers to everyone and add any number of courses with numbers to every course. i do it by arrays >>>>> student stu[] ; after add that ... i want to asign number of student to number of course how can i do that ??? linking two classes ??? in C++ of course visual studio 2003 any one please :) Link to comment Share on other sites More sharing options...
0 a_Burhan Posted March 25, 2009 Author Share Posted March 25, 2009 no one ??? :( Link to comment Share on other sites More sharing options...
0 GreenMartian Posted March 25, 2009 Share Posted March 25, 2009 I'm not quite sure I understand the question. Can you try posting your current class structure, and what you're trying to achieve? Link to comment Share on other sites More sharing options...
0 a_Burhan Posted March 25, 2009 Author Share Posted March 25, 2009 I'm not quite sure I understand the question. Can you try posting your current class structure, and what you're trying to achieve? ok my classes has an student_id and student _name and set and get to Id and name and same in courses after i add names and ids for student and courses i want to link the id of student with at least one id from courses Link to comment Share on other sites More sharing options...
0 ViZioN Posted March 25, 2009 Share Posted March 25, 2009 You could store a pointer to your courses class in the student class which would then allow you to 'message' the course class and access its functions. I can give a more fuller answer but I'm a bit busy right now. Post back if you want more info. Posting your code will help too! Link to comment Share on other sites More sharing options...
0 a_Burhan Posted March 26, 2009 Author Share Posted March 26, 2009 You could store a pointer to your courses class in the student class which would then allow you to 'message' the course class and access its functions. I can give a more fuller answer but I'm a bit busy right now. Post back if you want more info.Posting your code will help too! fine please expalin and this is my classes class Course { private: //int C_Id; //std::string C_name; public: int C_Id; std::string C_name; Course(void); ~Course(void); void set_C_Id(int x); int get_C_Id(); void set_C_name(std::string n); std::string get_C_name(); }; class Student { private: //int S_Id; std::string S_name; public: Course C_A_S[50]; Prof P_A_S[50]; Student(void); ~Student(void); void set_S_Id(int x1); int get_S_Id(); void set_S_name(std::string n); std::string get_S_name(); void get_S_by_Id(int x2); int S_Id; std::string me(int w); }; watting you ... :) Link to comment Share on other sites More sharing options...
0 vks87 Posted March 27, 2009 Share Posted March 27, 2009 void Display() { //do various display stuff //create keyboard object below Keyboard k; k.GetInput() { //.... } } Link to comment Share on other sites More sharing options...
0 Argi Posted March 27, 2009 Share Posted March 27, 2009 I'm not sure if this helps, but in Java I'd have a 3rd "driver" class that uses the other two (called say "Students" - plural). Link to comment Share on other sites More sharing options...
0 ViZioN Posted March 27, 2009 Share Posted March 27, 2009 OK your header files so far look like this: class Course{ private: //int C_Id; //std::string C_name; public: int C_Id; std::string C_name; Course(void); ~Course(void); void set_C_Id(int x); int get_C_Id(); void set_C_name(std::string n); std::string get_C_name(); }; class Student{ private: //int S_Id; std::string S_name; public: Course C_A_S[50]; Prof P_A_S[50]; Student(void); ~Student(void); void set_S_Id(int x1); int get_S_Id(); void set_S_name(std::string n); std::string get_S_name(); void get_S_by_Id(int x2); int S_Id; std::string me(int w); }; What I was suggesting was that you have a pointer to the Course class within the Student class. class Student{ private: Course *courseptr=NULL; public: void setCourseClass(Course* ptr){courseptr = ptr;} int setCourse(int course_id); }; int setCourse(int course_id) { courseptr->set_C_Id(course_id); } int getCourse() { return courseptr->get_C_Id(); } You will also have to ensure you add error checking to these functions to make sure courseptr is not NULL. So in your main you could do something like this: int main(void) { // Create a new Student Student student1(// etc); // Create a new instance of the Course class) Course course1(// etc); // Link the two classes together so the Student class // now knows the location of the course class student1.setCourseClass(&course1); // Set a course student1.setCourse(2); // Display the course to ensure it has been set correctly cout << "Course ID:" << student1.getCourse() << endl; } I haven't compiled the code so it may not be 100% working, but I think its roughly right. Hope this helps! Link to comment Share on other sites More sharing options...
0 JamesCherrill Posted March 29, 2009 Share Posted March 29, 2009 I recommend a third class, say "registrations", that holds info about which students are registered for which courses. Each instance will contain a single ref to a student and a single ref to a course. Each time a sudent signs up for a new course, that's a new member of the class. Link to comment Share on other sites More sharing options...
Question
a_Burhan
i have two classes
student
and courses
in my code i add any number of student with numbers to everyone
and add any number of courses with numbers to every course.
i do it by arrays >>>>> student stu[] ;
after add that ... i want to asign number of student to number of course
how can i do that ??? linking two classes ???
in C++ of course
visual studio 2003
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