1. C++ LANGUAGE MULTIPLE CHOICE QUESTION SET-5

2. 1. In a linked list: Each link contains a pointer to next link
An array of pointer to the next links
Each link contain data
Both A and C

3. 2. If you wanted to sort so many large objects or structure, it would be most efficient to:
Place them in a array and sort the array
Place pointers to them and then sort the array
Placed them in a link list and sort the link list
Place reference to them in an array and then sort them

4. 3. Virtual function allows you to:
Create an array of type pointer-to-base class that can hold pointer to derived class
Create function that have no body
Group the object of different class
Use the same function call to execute the member function from different class

5. 4. A pointer to be a base class can point to object of derived class.
True
False
Only base class
None of these

6. Late binding or dynamic binding
5. Deciding after a program start to execute what function will be executed by a particular function call statement, is called
Late binding
Dynamic binding
Late binding or dynamic binding
None of these

7. 6. A pure virtual function is a virtual functions that: (Choose all that apply)
Has no body
Returns nothing
Is used in a child class
Take no arguments

8. 7. A virtual base function is useful when:
Different base function in base and derived classes have the same name
There are multiple paths from the one derived class to another
The identification of a function in base class is ambiguous
It make sense to use base class with no body

9. 8. A friend function can be used to: (Choose all that apply)
Avoid arguments between classes
Allow access to class whose source code is unavailable
Allow one class to access unrelated class
Increase the versatility of an overloaded function

10. 9. The keyword friend appears in: (Choose all that apply)
The class allowing access to another class
All of these
The private section of a class
The private section of a class
The public section of a class

11. 10. A static function: Should be called when an object is destroyed
Is closely connected with an individual object for a class
Can be called using the class name and function name
Is used when a dummy object must be created

12. 11 . An assignment operator might be overloaded to: (Choose all that apply)
Help keep track of the number of identical object
Assign a separate id onto each object
Signal when assignment takes place
All of these

13. 12. The user must always define the operation of the copy constructor
True
False
Not always
No need to define

14. 13. The operation of the assignment operator and that of the copy constructor are: (Choose two options)
Similar, except that the copy constructor create the new object
Similar, except that the assignment operator copies member data
Different , except that the y both copy member data
A and C

15. Not just part a whole object data
212. A copy constructor could be defined to copy only part of an object data
True
False
Values
Not just part a whole object data

16. 15. The lifetime of a variable that is defined as: (Choose all that apply)
Automatic in a member function coincides the lifetime of the function
External coincide with the life time of the class
Member data of an object coincide with the lifetime of the object
Static in a member function coincide with the lifetime of the function

17. 16. There is no problem with returning the value of a variable defined as automatic within a member function so long as it is returned by the value.
True
False
Partially true
Partially false

18. 17. A copy constructor is invoked when: (Choose two option)
A function returns by value
An argument is passed by value
A function returns by reference
Both And B

19. 18. What does this pointer point to?
The object of the function whose using its member
The current occupying object
Both a and b
None of these

20. The flow of function through the function
19. A C++ stream is:
The flow of function through the function
The flow of data from one place to another
A file
None of these

21. 20. The base class for most stream classes is the ------ class.
IOS IS OS
None of these

22. 21. Which stream class is to only write on files?
ofstream
ifstream
fstream
iostream

23. 22. Which stream class is to only read on files?
of stream
if stream
stream
upstream

24. 23. To perform File I/O operations, we must use _____________ header file.
<ifstream>
<ofstream>
<fstream>
One of these

25. 24. Which of the following is not a file opening mode ____ .
Ions::ate
Ions::concrete
Ions::no replace
Ions::truncate

26. 25. Streams that will be performing both input and output operations must be declared as class 
iostream
stream
stdstream
Stdiostream

27. 26. To create an output stream, we must declare the stream to be of class ___________.
ofstream
ifstream
iostream
None of these

28. 27. Which among following is used to open a file in binary mode ?
Ios::app
Ios::out
Ios::in
Ios::binary

29. 28. Which is correct syntax?
myfile:open ("example.bin", ios::out);
myfile.open ("example.bin", ios::out);
myfile::open ("example.bin", ios::out);
myfile.open ("example.bin", ios:out);

30. 29. Which among following is correct syntax of closing a file in c++ ?
myfile$close();
myfile:close();
myfile.close();

31. 30. __________ is return type of is_open() function.
into
bolo
float
char *

32. 31. It is not possible to combine two or more file opening mode in open () method.
True
False

33. 32. By default, all the files are opened in ___________mode
Binary
Text
Can’t say
No idea

34. 33. What is use of elf()?
Returns true if a file open for reading has reached the next character.
Returns true if a file open for reading has reached the next word.
Returns true if a file open for reading has reached the end
Returns true if a file open for reading has reached the middle

35. 34. Offset counted from the current position using?
Ios::curr
Ios::cr
Ios::cur
Ios::current

36. 35. Which functions allow changing the location of the get and putting positions?
sg() and sp()
sekg() and sekp()
gog() and gop()
seekg() and seekp()

37. 36. Offset counted from the current position using?
Ios::curr
Ios::cr
Ios::cur
Ios::current

38. 37. Which among is used for positioning relative to the beginning of a stream?
Ios::start
Ios::beg
Ios::begin
Ios::begining

39. 38. Which is among following is used to Open a file for output and move the read/write control to the end of the file?
Ios::ate
Ios::ann
Ios::at
Ios::end

40. 39. A group of related classes, supplied as a separate product is often called a:
Class library
Package
Class structure
None of the mentioned

41. 40. How to find the position at end of fileObject?
fileObject.seekg( 0, ios::end );
fileObject.seekg( 0, ios::end );
fileObject.seekg( 0, ios::end );
fileObject.seekg( 0, ios::end );

42. 41. How to get position n bytes forward in fileObject?
fileObject.seekg( ios::cur, n );
fileObject.seekg( n, ios:cur );
fileObject.seekg( n, ios::cur );
fileObject.seekg( ios:cur, n );

43. 42. How to get position to the nth byte of fileObject?
fileObject.seekg( 'filename',n );
fileObject.seekg( n, 'filename' );
fileObject.seekg( n );
fileObject.seekg( n, ios::app );

44. 43. eof() is used to get: Easy code review End of file Debug report
File close

45. 44. Name of the streams that are used for:
If stream
Of stream
F stream
All of them

46. 45. Some stream work with input and some with output?
True
False
Partially true
Partially false

47. 46. We can output a text on an object class of ofstream using the insertion operator because:
The ofstream class is the stream
The insertion operator is work with all classes
We are actually outputting to cout
The insertion operator is overloaded in ofstream

48. The insertion operator
47. To write data of the type float, to an object of type ofstream you should use:
The insertion operator
Seeking()
Write()
Put()

49. 48. Mode bit such as app and ate: (Choose all that apply)
Are defined as ios class
Specify ways of opening a file
Work with the put() and get() function
All of these

50. 49. A file pointer is always contains the address of the file.
True
False
Partially true
Partially false

51. 50 . The statement f1.write((char*)^obj1, sizeof(obj1));
Writes the member function of obj1 to f1
Writes the date in obj1 to f1
Writes the member function and data of obj1 to f1
Writes the address if obj1 to f1

52. 51. Redirection redirects:
A stream from a file to screen
A file from a device to a stream
A device from a stream to screen
The screen from a device to stream