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7. Assuming that an operator overload for the stream extraction operator is created for class Planet and is also a member function of that class; assume that p is defined as an object of type Planet. What would the correct syntax be to input p? a. cin >> p; b. p >> cin; c. cin >> Planet p; d. Planet.cin >> p; 8. The ofstream class provides a fail() function to determine if the last attempt to write to a file failed. a. True b. False 9. To close a file once a function is done reading or writing to it, the program can a. Call the close function on the object b. Wait for the object to go out of scope and let the objects destructor close the file C. a and b are correct d. None of the above 10. A destructor is a a. Member function that is automatically called when an object of the class/struct type goes out of scope b. Must be declared publicly c. Both a and b d. None of the above 11. When a class dynamically allocates memory using new, a destructor is not necessarily required as the memory will be deallocated when an object of that class goes out of scope. a. True b. False 12. A type of member function that is intended to be overloaded in a derived class is a a. Template function b. Friend function c. Virtual function d. Inline function 13. Which of the following is true of an abstract base class a. An object cannot be instantiated of an abstract base class type b. It contains one more pure virtual functions c. It is intended strictly as a template to derive other classes d. All of the above

7. Assuming that an operator overload for the stream extraction operator is created for class Planet and is also a member function of that class; assume that p is defined as an object of type Planet. What would the correct syntax be to input p? a. cin >> p; b. p >> cin; c. cin >> Planet p; d. Planet.cin >> p; 8. The ofstream class provides a fail() function to determine if the last attempt to write to a file failed. a. True b. False 9. To close a file once a function is done reading or writing to it, the program can a. Call the close function on the object b. Wait for the object to go out of scope and let the objects destructor close the file C. a and b are correct d. None of the above 10. A destructor is a a. Member function that is automatically called when an object of the class/struct type goes out of scope b. Must be declared publicly c. Both a and b d. None of the above 11. When a class dynamically allocates memory using new, a destructor is not necessarily required as the memory will be deallocated when an object of that class goes out of scope. a. True b. False 12. A type of member function that is intended to be overloaded in a derived class is a a. Template function b. Friend function c. Virtual function d. Inline function 13. Which of the following is true of an abstract base class a. An object cannot be instantiated of an abstract base class type b. It contains one more pure virtual functions c. It is intended strictly as a template to derive other classes d. All of the above

Database System Concepts
Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
Problem 1PE
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7. Assuming that an operator overload for the stream extraction operator is created for class Planet and is also a member function of that class; assume that p is defined as an object of type Planet. What would the correct syntax be to input p? a. b. c. cin >> Planet p; d. Planet.cin >> p; cin >> p; p >> cin; 8. The ofstream class provides a fail() function to determine if the last attempt to write to a file failed. a. True b. False 9. To close a file once a function is done reading or writing to it, the program can a. Call the close function on the object b. Wait for the object to go out of scope and let the objects destructor close the file C. d. a and b are correct None of the above 10. A destructor is a a. Member function that is automatically called when an object of the class/struct type goes out of scope Must be declared publicly b. c. Both a and b d. None of the above 11. When a class dynamically allocates memory using new, a destructor is not necessarily required as the memory will be deallocated when an object of that class goes out of scope. a. True b. False 12. A type of member function that is intended to be overloaded a derived class is a a. Template function b. Friend function c. Virtual function Inline function d. 13. Which of the following is true of an abstract base class a. An object cannot be instantiated of an abstract base class type b. It contains one more pure virtual functions c. It is intended strictly as a template to derive other classes d. All of the above
Transcribed Image Text:7. Assuming that an operator overload for the stream extraction operator is created for class Planet and is also a member function of that class; assume that p is defined as an object of type Planet. What would the correct syntax be to input p? a. b. c. cin >> Planet p; d. Planet.cin >> p; cin >> p; p >> cin; 8. The ofstream class provides a fail() function to determine if the last attempt to write to a file failed. a. True b. False 9. To close a file once a function is done reading or writing to it, the program can a. Call the close function on the object b. Wait for the object to go out of scope and let the objects destructor close the file C. d. a and b are correct None of the above 10. A destructor is a a. Member function that is automatically called when an object of the class/struct type goes out of scope Must be declared publicly b. c. Both a and b d. None of the above 11. When a class dynamically allocates memory using new, a destructor is not necessarily required as the memory will be deallocated when an object of that class goes out of scope. a. True b. False 12. A type of member function that is intended to be overloaded a derived class is a a. Template function b. Friend function c. Virtual function Inline function d. 13. Which of the following is true of an abstract base class a. An object cannot be instantiated of an abstract base class type b. It contains one more pure virtual functions c. It is intended strictly as a template to derive other classes d. All of the above
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