(tco 2) which of the following statements is not valid c++ code?

Page 1 Multiple Choice Questions

Question 1.1. (TCO 1) What is the value of alpha[3] after the following code executes? int alpha[6] = {0}; int j; for(j = 4; j >= 0; j--) { alpha[j] = j + 5; if (j % 2 == 0) alpha[j + 1] = alpha[j] + 3; } (Points : 4)

5 8 9 10

Question 2.2. (TCO 1) After the following statements execute, what are the contents of the matrix? int matrix[3][2] = {0}; int j, k; for (j = 0; j < 3; j++) for (k = 0; k < 2; k++) matrix[j][k] = j + k; (Points : 4)

0 0 1 1 2 2 0 1 2 3 4 5 0 1 1 2 2 3 1 1 2 2 3 3

Question 3.3. (TCO 1) After the following statements execute, what are the contents of the matrix? int matrix[4][3] = {0}; int j, k; for (j = 0; j < 4; j++) for (k = 0; k < 3; k++) matrix[j][k] = 2 * j + k; (Points : 4)

0 2 4 1 3 5 2 4 6 3 5 7 0 1 2 1 2 3 2 3 4 3 4 5 0 2 4 2 4 6 4 6 8 6 8 10 0 1 2 2 3 4 4 5 6 6 7 8

Question 4.4. (TCO 1) Which of the following correctly declares and initializes alpha to be an array of 4 rows and 3 columns with the component type int? (Points : 4)

int alpha[4][3] = {{0,1,2} {1,2,3} {2,3,4} {3,4,5}}; int alpha[4][3] = {0,1,2; 1,2,3; 2,3,4; 3,4,5}; int alpha[4][3] = {0,1,2: 1,2,3: 2,3,4: 3,4,5}; int alpha[4][3] = {{0,1,2}, {1,2,3}, {2,3,4}, {3,4,5}};

Question 5.5. (TCO 1) What is stored in alpha after the following code executes? int alpha[5] = {0}; int j; for (j = 0; j < 5; j++) { alpha[j] = j + 5; if ( j % 2 == 1) //see if j is an even number alpha[j - 1] = alpha[j] + 2; } (Points : 4)

alpha = {5, 6, 7, 8, 9} alpha = {5, 6, 10, 8, 9} alpha = {8, 6, 7, 8, 9} alpha = {8, 6, 10, 8, 9}

Question 6.6. (TCO 1) Which of the following statements declares alpha to be an array of 25 components of the type int? (Points : 4)

int alpha[25]; int array alpha[25]; int alpha[2][5]; int array alpha[25][25];

Question 7.7. (TCO 2) A public member function of a class can access _____. (Points : 4)

only other public members of the class. public and nonpublic members of a class only private members of a class neither public nor private class members

Question 8.8. (TCO 2) If a member of a class is ____, you cannot access it outside the class. (Points : 4)

public automatic private static

Question 9.9. (TCO 2) Consider the following class definition. class rectangleType { public: void setLengthWidth(double x, double y); //Postcondition: length = x; width = y; void print() const; //Output length and width; double area(); //Calculate and return the area of the rectangle; double perimeter(); //Calculate and return the parameter; rectangleType(); //Postcondition: length = 0; width = 0; rectangleType(double x, double y); //Postcondition: length = x; width = y; private: double length; double width; }; And consider this declaration. rectangleType bigRect; Which of the following statements is correct? (Points : 4)

rectangleType.print(); rectangleType::print(); bigRect.print(); bigRect::print();

Question 10.10. (TCO 2) In C++, the ____ is an operator called the member access operator. (Points : 4)

. , :: #

Page 2 Multiple Choice

Question 1.1. (TCO 2) Suppose you have the following UML class diagram of a class. Which of the following is an accessor? (Points : 4)

incrementHours setTime getTime clockType

Question 2.2. (TCO 2) Suppose you have the following UML class diagram of a class. According to the UML class diagram, which function is public and doesn't return anything? (Points : 4)

incrementHours equalTime printTime setTime

Question 3.3. (TCO 2) Consider the following declaration. class myClass { public: void print(); private: int x; }; myClass myObject; Which statement is legal? (Points : 4)

myObject.print = 10; myClass.print = 10; myObject.print(); myClass.print();

Question 4.4. (TCO 3) Composition is a stronger form of _____. (Points : 4)

inheritance aggregation instantiation encapsulation

Question 5.5. (TCO 3) Composition and inheritance are two fundamental ways of relating _____. (Points : 4)

classes objects class function members class data members

Question 6.6. (TCO 3) Aggregation is also sometimes called _____. (Points : 4)

inheritance instantiation composition encapsulation

Question 7.7. (TCO 3) Which of the following statements is an accurate example of composition? (Points : 4)

A car has an engine. A car is an automobile. A car is an object. A car has a class.

Question 8.8. (TCO 4) If the derived class does not override a public member function of the base class, you may specify a call to that public member function that has parameters by _____. (Points : 4)

using the name of the function and no parameter list using only the name of the function using the name of the function and the appropriate parameter list Public member functions cannot be accessed in a derived class.

Question 9.9. (TCO 4) Which of the following is a valid definition of the derived class bClass? (Points : 4)

class aClass: public bClass{ //...}; class bClass: public aClass{ //...}; class aClass::bClass{ //...}; class bClass::aClass{ //...}

Question 10.10. (TCO 4) Which of the following statements correctly describes an example of multiple inheritance? (Points : 4)

Mother and Father to Children Animal to Reptile to Snake Parent to Child Animal to Mammal and Bird

Page 3 Multiple Choice

Question 1.1. (TCO 4) Which of the following relationships is not a correct example of inheritance? (Points : 4)

Parent to Children Aunt to Uncle Grandparent to Grandchild Father and Mother to Children

Question 2.2. (TCO 4) To overload a member function of the base class, _____. (Points : 4)

the name of the function and the formal parameter list of the corresponding function in the derived class must be same the name of the function must be different, and the formal parameter list of the corresponding function in the derived class must be same the name of the function and the formal parameter list of the corresponding function in the derived class must be different the name of the function must be the same, and the formal parameter list of the corresponding function in the derived class must be different

Question 3.3. (TCO 4) Which of the following is not true about public inheritance? (Points : 4)

All the public member functions of the base class become the public member functions of the derived class. All the public member variables of the base class become the public member variables of the derived class. All the public members of the base class become the public members of the derived class. The the public member variables of the base class become the private member variables of the derived class.

Question 4.4. (TCO 5) What is the data type of pDist? Distance * pDist; (Points : 4)

Distance Const pointer to Distance Pointer to Distance Pointer to MAX

Question 5.5. (TCO 5) Given the definition of a class called Employee and given an Employee pointer variable called myData, which is pointing to an array of 20 Employee objects, which of the following statements correctly accesses the getSalary method of the last employee that takes no parameters and returns a double value? (Points : 4)

cout << *(myData + 20).getSalary( ); cout << myData[20].getSalary( ); cout << myData->getSalary[19]; cout << myData[19].getSalary( );

Question 6.6. (TCO 5) What is wrong with the following C++ statements? int* iptr; double d = 123.321; iptr = & d; cout << *iptr; (Points : 4)

The cout statement does not contain an endl. The space following the ampersand should not be there. The iptr variable cannot be given an address of a double. All of the above

Question 7.7. (TCO 5) Assume that Distance is a class. Which is a valid statement to assign a new value to pDist? Distance * pDist; Distance d2(1, 2.3); (Points : 4)

pDist = d2; pDist = *d2; pDist = &d2; pDist = #d2;

Question 8.8. (TCO 6) Which of the following operators may not be overloaded? (Points : 4)

= :: || &&

Question 9.9. (TCO 6) What is a friend function? (Points : 4)

An overloaded operator A function in a derived class that overrides a base class function of the same name A nonmember function of a class that has access to all the members of the class A function called by member function of a class

Question 10.10. (TCO 6) If a class uses dynamic memory allocation, which statement is true? (Points : 4)

It must not use dynamic memory allocation in a copy constructor. All the allocated memory must be deallocated before the object goes out of scope and the destructor is called. It must not overload the assignment operator. It must include the dynamic allocation in all the constructors, and it must then deallocate all of the allocated memory in the destructor.

Question 11.11. (TCO 6) Which of the following operators can be overloaded? (Points : 4)

. .* :: ++

Question 12.12. (TCO 7) Overriding a base-class member function with a derived member function demonstrates the concept of _____. (Points : 4)

overloading inheritance polymorphism abstraction

Question 13.13. (TCO 7) If a function is declared virtual in a base class, then _____. (Points : 4)

it must also be declared virtual in any derived classes it must not be overridden in any derived classes it remains virtual even if a derived class overrides it and does not declare it as virtual it must be overridden in all derived classes

Question 14.14. (TCO 7) Consider the following class definitions. class Employee { }; class Boss : public Employee { }; class Worker : public Employee { }; If the function double CalculateEarnings(); is declared as virtual in the class Employee, which class then becomes abstract? (Points : 4)

Boss Employee Worker Both Boss and Worker

Question 15.15. (TCO 7) Which term is a correct definition of run-time binding? (Points : 4)

Late binding Independent binding Dependent binding Static binding

Question 16.16. (TCO 7) Polymorphism means _____. (Points : 4)

having the ability to use the same expression to denote different operations having multiple objects of the same class that a derived class has more than one base class creating new objects and classes from existing objects and classes

Question 17.17. (TCO 8) In a multifile, object-oriented, C++ project, which file contains the class implementation? (Points : 4)

classname.hdr classname.h classname.def classname.cpp

Question 18.18. (TCO 8) When creating a macro, which preprocessor directive is used? (Points : 4)

ifndef define ifdef endif

Question 19.19. (TCO 8) Class header files are usually designated by what indicators? (Points : 4)

< > ( ) " " ' '

Question 20.20. (TCO 8) In a multifile, object-oriented, C++ project, which is the correct statement for the constructor implementation, given that the constructor is correctly defined in the class definition file? (Points : 4)

Classname:Classname{ } Classname { } Classname::Classname { } Classname { }