EC327-Homework 5 Solved

Q1 Class design
 

Take the Student class that you implemented in HW4. Modify it so that all its members (first, last, id, and gpa) are private. In addition to the methods that you implemented in HW4, implement the following public ones: 

•       A copy constructor that allows to properly copy an instance of Student. 

•       A method void setFirst(string f) that takes a string as a parameter and sets it as the value of first. 

•       A method void setLast(string l) that takes a string as a parameter and sets it as the value of last. 

•       A method void setId(unsigned int n) that takes an unsigned integer as a parameter and sets it as the value of id. 

•       A method string getFirst() that returns the value of first. 

•       A method string getLast() that returns the value of last. 

•       A method unsigned int getId() that returns the value of id. 

 

Save your Student class declaration in a file named student.h, and your implementation in a file named student.cpp. 

 

Files to submit: student.h, student.cpp 
 

Q2 Class design. 
 

Design a class named Course that handles the enrollment for a college class. Declare the following members and methods in a file course.h. 

 

a)  Declare the following members: 

 

•       A string data field named name, which holds the name of the course 

•       An unsigned integer data field capacity, which holds the maximum enrollment for the course 

•       An unsigned integer data field numStudents, which holds the number of students enrolled in the course 

•       A pointer to Student students, which points to an array of Student objects containing the information of all the students in the course 

 

All members should be made private. 

 

b)  Declare prototypes for the following methods in course.h, and implement them in course.cpp:  

 

•       A no argument constructor, which sets name to “EC000”, capacity to 1000, and numStudents to 0. It also allocates a Student array of size capacity on the heap, and makes students point to it. 

•       A constructor Course(string n, int c) which sets name to n and capacity to c.

numStudents is set to 0, and the constructor allocates a Student array of size capacity on the heap, and makes student point to it. 

•       A destructor ~Course() that properly deletes an instance of class Course when invoked. 

•       A copy constructor that makes a deep copy of a Course instance. 

•       A method unsigned int getNumStudents() that returns the number of students in the class. 

•       A method unsigned int getCapacity() that returns the capacity of the class. 

•       A method unsigned int getAvailableSeats() that returns the number of spots that are still available in the class. 

•       A method addStudent that adds a new student to the class. The method should check if there is space for the student in the class, and modify the numStudents variable accordingly. If the class is full, print an error message on the screen. The prototype of addStudent is as follows: 

void addStudent(string f, string l, int id, float g) 
 The constructor should then create an instance of class Student with first set to f, last  set to l, id set to id, and gpa set to g.  

• A method void dropStudent(string name) that removes a student from the class. The method takes a string as a parameter and checks for an entry with that name in the student array. The string contains a concatenation of first and last name (e.g., “John Doe”), and the function should split this string in first and last name and check for an instance of Student that matches those parameters. If a student with that name is found, the student instance is removed from the array, and the array is rearranged so that there are no gaps in it. See the following example, in which instances of the class Student are represented as the concatenation of their first and last names. if the array pointed to by student looks like this: 

 

[“John Doe”,”Jane Doe”, “Bruce Wayne”] 

                 

               And the function dropStudent(“Jane Doe”) is called, the array will look like: 

                                 

                                [“John Doe”, “Bruce Wayne”] 
 

 Note that since the array pointed to by student is private, we do not care about what  is cont ained in the array elements that are beyond the numStudents-1 index.  If no student is found  or the class is empty, the method should print an error message. 

• A method getStudents that print the names of the students in the class, one per line. If the course is empty, the method should return the string “The course is empty”. 

   

All methods should be made public.

 

You should write a main function to test your Course class and the methods that you implemented, but you shouldn’t submit this main file.