Thread: help !!concept of class templates

  1. #1
    Registered User
    Join Date
    Sep 2002

    help !!concept of class templates

    I have tried using a class template concept

    but it does not seem to work ,
    throws 2 error statements on compilation

    i am new to the concept of class templates

    what is the error in my program ???

    Error 663: "templ2.cpp", line 15 # Expected template arguments following template name 'student'.
    void student::add()
    Error 553: "templ2.cpp", line 31 # Expected type arguments to follow class template name.
    student s1;

    template <class T>
    class student
       T rollno;
       T mark1;
       T mark2;
        void  add();  /* function prototype */
    template <class T>
    void student::add()
              T total;
              cout<<"enter the rollno of the student";
              cin>>rollno ;
              cout<<"enter the mark in the first subject ";
              cout<<"enter the mark in the second subject ";
              total = mark1 + mark2;
              cout<<" the total in the two subjects is "<<total;
              cout<<" the roll no is "<<rollno;
    int main()
      student s1;
      return 0;

  2. #2
    Confused Magos's Avatar
    Join Date
    Sep 2001
    template <class T>
    void student::add()
    This should be
    template <class T>
    void student<T>::add()
    Also, when declaring an instance of this class it should not be like this:
    student s1;
    but this:
    student<int> s1;
    int, or whatever datatype you want T to be.

    Give a man a fish and you feed him for a day.
    Teach a man to fish and you feed him for a lifetime.

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