Exam 10: Classes and Data Abstraction

A class is an example of a structured data type.

By default,all members of a class are ____________________.

In C++,the ____ is an operator called the member access operator.

A member function of a class that only accesses the value(s)of the data member(s)is called a(n)____ function.

Figure 2: class rectangleType { public: $\quad$ void setLengthWidth(double x, double y); $\quad$$\quad$ //Postcondition: length = x; width = y; $\quad$ void print() const; $\quad$$\quad$ //Output length and width; $\quad$ double area(); $\quad$$\quad$ //Calculate and return the area of the rectangle; $\quad$ double perimeter(); $\quad$$\quad$ //Calculate and return the parameter; $\quad$$\quad$ rectangleType(); $\quad$$\quad$ //Postcondition: length = 0; width = 0; $\quad$ rectangleType(double x, double y); $\quad$$\quad$ //Postcondition: length = x; width = y; private: $\quad$ double length; $\quad$ double width; }; -Consider the accompanying class definition,and the declaration: rectangleType bigRect; Which of the following statements is correct?

A(n)____________________ function of a class changes the values of the member variable(s)of the class.

A program or software that uses and manipulates the objects of a class is called a(n)____________________ of that class.

If a member of a class is ____,you cannot access it outside the class.

A class object can be ____.That is,it can be created once,when the control reaches its declaration,and destroyed when the program terminates.

Which of the following class definitions is correct in C++?

A(n)____________________ is a statement specifying what is true after the function call is completed.

A class object can be ____.That is,it is created each time the control reaches its declaration,and destroyed when the control exits the surrounding block.

A(n)____________________ contains the definitions of the functions to implement the operations of an object.

Figure 1: -Consider the UML class diagram shown in the accompanying figure.Which of the following is the name of the class?

A class and its members can be described graphically using a notation known as the ____ notation.

A constructor with no parameters is called the ____________________ constructor.

As parameters to a function,class objects can be passed by reference only.

Which of the following is true about classes and structs?

In C++,you can pass a variable by reference and still prevent the function from changing its value by using the keyword ____ in the formal parameter declaration.

If a class object is passed by ____________________,the contents of the member variables of the actual parameter are copied into the corresponding member variables of the formal parameter.