Discussion
Home ‣ Computer Science ‣ Object Oriented Programming Using C++ Comments
- Question
To be called object-oriented, a programming language must allow
Options- A. functions that return only a single value
- B. #include files
- C. inheritance
- D. All of the above
- Correct Answer
- inheritance
- 1. The #ifndef directive tests to see whether ________
Options- A. a class has been defined
- B. a variable has been given a value
- C. a class has no variable definitions
- D. any objects of the class have been instantiated Discuss
- 2. The _____ mode tells C++ to open a file for input
Options- A. add::ios
- B. in::file
- C. ios::app
- D. ios::in
- E. ios::out Discuss
- 3. A function that changes the state of the cout object is called a(n) _____
Options- A. member
- B. adjuster
- C. manipulator
- D. operator Discuss
- 4. Using the wardrobe structure within the ShopList structure is an example of a good programming principle, known as _____
Options- A. reusability
- B. polymorphism
- C. redundancy
- D. recursion Discuss
- 5. A default catch block catches
Options- A. all thrown objects
- B. no thrown objects
- C. any thrown object that has not been caught by an earlier catch block
- D. all thrown objects that have been caught by an earlier catch block Discuss
- 6. When a child class function is called, the compiler looks first for a matching function name in the _____
Options- A. class of the object using the function name
- B. immediate ancestor class
- C. base class
- D. descendant class Discuss
- 7. A widget is to the blueprint for a widget as an object is to
Options- A. a member function
- B. a class
- C. an operator
- D. a data item Discuss
- 8. What does C++ append to the end of a string literal constant?
Options- A. a space
- B. a number sign (#)
- C. an asterisk (*)
- D. a null character Discuss
- 9. The use of the break statement in a switch statement is
Options- A. optional
- B. compulsory
- C. not allowed. It gives an error message
- D. to check an error
- E. None of the above Discuss
- 10. You define a structure type globally because _____
Options- A. you save many lines of code by not rewriting an identical structure definition in each function that uses it
- B. you will never change its definition
- C. it is required in C++
- D. All of the above Discuss
Object Oriented Programming Using C++ problems
Search Results
Correct Answer: a class has been defined
Explanation:
#ifndef checks whether the given token has been #defined earlier in the file or in an included file; if not, it includes the code between it and the closing #else or, if no #else is present, #endif statement. #ifndef is often used to make header files idempotent by defining a token once the file has been included and checking that the token was not set at the top of that file.
Correct Answer: ios::in
Correct Answer: manipulator
Correct Answer: reusability
Correct Answer: any thrown object that has not been caught by an earlier catch block
Correct Answer: class of the object using the function name
Correct Answer: a class
Correct Answer: a null character
Correct Answer: optional
Correct Answer: you save many lines of code by not rewriting an identical structure definition in each function that uses it
Comments
There are no comments.More in Computer Science:
Programming
Copyright ©CuriousTab. All rights reserved.