CS201 Quiz

1. The stream-insertion operator >> and the stream-extraction operator is<<.

Answer: False

2. It is possible to return on object from function using this pointer.

Answer: True

3. A variable which is defined inside a function is called

Answer: None of the given option

4. When new operator is overloaded at global level then corresponding built-new operator will also be visible to whole of the program

Answer: False

5. Which of the following syntax is best used to delete an array of 5 objects named string allocated using new operator.

Answer: delete[]string;

Q6. What will the output of following statement?

( cout<<setfill (0) << setw (7) << 128;

Answer: 000128

7. With user data type variables (objects) self-assignment can produce

Answer: Logical error

8. In c++ operators, which of the following operator cannot be overloaded

Answer: ?:

9. Overloaded member operator function is always called by …….

Answer: object

10. Which of the following is the correct definition of streams? Ans. it is an ordered sequence of bytes
11. The life time of the static data member of a class is the life time of the…….

Answer: program

12. What is meant by the following statement? String str[5] = {String(“programming”), string (CS201)};

Answer: Parameterized constructor will be called for all objects of array

Q13. What is the difference between cout and cerr?

Answer: Destructor is called first before deallocating memory

Q14. What is the sequence of event (s) when deallocating memory of an object using delete operator?

Answer: Destructor is called first before deallocating memory

15. When a variable is defined as static in a lass then ………..

Answer: only one copy is created for all objects of this class

16. Which of the following syntax is best used to delete an array of 5 objects named string allocated using operator.

Answer: deelte[]string;

17. Below is given a code snippet ( Char name [50]; cin>> name; cout << name; ) Now if use enters the name, for example “sohail Aslam” than what will be the output of the code?

Answer: Sohail Aslam

Q18. What is the purpose of endl stream manipulator?

Answer: flush the stream

19. When the compiler overloads the assignment (=) operator by default then

Answer: class members are not assigned properly

20. Let suppose a= b = c In such situation, it is necessary to return a reference of an object from assignment operator function.

True

21. Ostream is a ……………….. operator.

Answer: Standalone

22. The endl and flush are …………………

Answer: Manipulators

Q23. Which one of the following is the declaration of overloaded Pre-increment operator implemented as member function?

Answer: Class-name Operator ++();

24. For the joining of two strings in string class, we may use ‘+’ operator, can we use ‘-‘ operator the same way for subtracting strings

Answer: Yes

25. Overloaded delete operator function takes parameter of vaid pointer and returns.

Answer: Void Pointer

26. When an array of object is created dynamically then there is no way to provide parameterized constructors for array of objects.

Answer: True

27. Df

28.