91Ó°ÊÓ

Consider the following definition of the class myClass: class myClass { public: void setX(int a); //Function to set the value of x. //Postcondition: x = a; void printX() const; //Function to output x. static void printCount(); //Function to output count. static void incrementCount(); //Function to increment count. //Postcondition: count++; myClass(int a = 0); //constructor with default parameters //Postcondition x = a; //If no value is specified for a, x = 0; private: int x; static int count; }; a. Write a C++ statement that initializes the member variable count to 0. b. Write a C++ statement that increments the value of count by 1. c. Write a C++ statement that outputs the value of count. d. Write the definitions of the functions of the class myClass as described in its definition. e. Write a C++ statement that declares myObject1 to be a myClass object and initializes its member variable x to 5. f. Write a C++ statement that declares myObject2 to be a myClass object and initializes its member variable x to 7. g. Which of the following statements are valid? (Assume that myObject1 and myObject2 are as declared in Parts e and f.) myObject1.printCount(); //Line 1 myObject1.printX(); //Line 2 myClass.printCount(); //Line 3 myClass.printX(); //Line 4 myClass::count++; //Line 5 h. Assume that myObject1 and myObject2 are as declared in Parts e and f. What is the output of the following C++ code? myObject1.printX(); cout << endl; myObject1.incrementCount(); 1 2 Exercises | 717 myClass::incrementCount(); myObject1.printCount(); cout << endl; myObject2.printCount(); cout << endl; myObject2.printX(); cout << endl; myObject1.setX(14); myObject1.incrementCount(); myObject1.printX(); cout << endl; myObject1.printCount(); cout << endl; myObject2.printCount(); cout << endl;