Chapter 12: Programming Exercises

//
//  student.cpp - example of inheritance
//
#include
#include
#include

enum YEAR { FRESH, SOPH, JUNIOR, SENIOR };
enum SUPPORT {TA, RA, FELLOWSHIP, OTHER };

class Student
{
public:
    //   Constructors
    Student()
    {
         student_id = 0;
         gpa = 0.0;
         college[0] = '\0';
         yr = FRESH;
         major [0] = '\0';
    }
    Student( int id, float g )
    {
         student_id = id;
         gpa = g;
         college[0] = '\0';
         yr = FRESH;
         major [0] = '\0';
    }
    //   prompt for and read values
    virtual void read( void );
    //   print values held
    virtual void print( void );

protected:
    int student_id;     // student ssn
    float gpa;          // student grade point average
    char name[30];      // student name
    char college[20];   // college name
    YEAR yr;            // year in college
    char major[10];     // area of study

};


class GradStudent : public Student
{
public:
    // Constructors
    GradStudent() : Student()
    {
         supp = TA;
         dept[0] = '\0';
         thesis[0] = '\0';
    }
    GradStudent( SUPPORT x, int id, float g)
         : Student(id, g)
    {
         supp = x;
         dept[0] = '\0';
         thesis[0] = '\0';
    }
    // implementation of base class virtual functions
    void print( void );
    void read( void );

private:
    SUPPORT supp;
    char dept[10];
    char thesis[80];

};

 1. Implement the following methods for both of the above
    classes.

    For the Student class code the implementation of:

    A. virtual void read( void );


    B. virtual void print();

    For the GradStudent class code the implementation of:

    A. virtual void read( void );

    B. virtual void print();

 2. Write a test program that will demonstrate the
    inheritance relationship between the Student and the
    GradStudent classes.