Database System Concepts
7th Edition
ISBN: 9780078022159
Author: Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher: McGraw-Hill Education
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Two objects of the same class, say "myInstance 1" and "myInstance2", are declared in a program as a collection of some type (say an ArrayList).
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- Write C++ code for a class named MuniBus that has the following private member variables: int totalPassengers; double faresCollected; and the following public member functions: void passengerBoard() - adds 2.50 to faresCollected and adds 1 to totalPassengers double getFaresCollected() - returns faresCollected int getPassengers() - returns totalPassengers void reset() - sets totalPassengers and faresCollected to zero MuniBus() - default constructor. Initializes both totalPassengers and faresCollected to 0 MuniBus(int tp, double fc) - constructor which initializes totalPassengers to tp, faresCollected to fc ~MuniBus() - destructor. Prints out a message saying that the bus is being destroyed, and also prints out totalPassengers and faresCollected. Write the class declaration and implement all of the constructors, the destructor, and member functions. You do not need to demonstrate using your class or show output.arrow_forwardPLZ help wiith the following: IN JAVA If an inner class contains non static members, then the class name must be modified by the keyword: Final Static Void Protectedarrow_forwardUsing C++ programming language create a class triangle that has three sides as class members and contains overloaded constructor. If two sides are given then calculate area as ½ * side1 * side2. However if three sides are given then calculate area using the Heron’s formula.arrow_forward
- Define Invoking a Constructor.arrow_forwardclass A{ protected int al; protected double a2; protected boolean a3; public A() { a1 = 0; a2 = 0; a3 = false; System.out.printin("A's Default Constructor."); } public A(int al, double a2, boolean a3) { this.al = al; this.a2 = a2; this.a3 = a3; System.out.printIn("A's Overloaded Constructor."); } } class B extends A{ protected char b1; public B() { b1 = ' "; System.out.printin("B's Default Constructor."); } public B(int al, double a2, boolean a3, char b1) { this.al = al; this.a2 = a2; this.a3 = a3; this.b1 = b1; System.out.printin("B's Overloaded Constructor."); } } class C extends B{ protected String c1; public C() { super (); c1 = " ; System.out.print]n("C's Default Constructor."); } public C(int al, double a2, boolean a3, char b1, String c1) { super (al, a2, a3, b1); this.c1 = c1; System.out.printin("C's Overloaded Constructor."); } } ignoring the 'time left' message, Check the above code and specify which object declaration generates an error. Question 1Answer A obj2 = new A(1,…arrow_forward
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