Object Oriented Programming using C++ MCQ

Test your knowledge with important Object Oriented Programming using C++ MCQ and their applications. These MCQs are beneficial for competitive exams too. Explore 30 + more Object Oriented Programming using C++ MCQs at Bissoy

• The string class deals with string of only character type.
  ক

  True

  খ

  False
• If two arguments are passed to the indexOf() function then ___________________
  ক

  Second argument indicates the occurrence number of specified character from starting

  খ

  Second argument indicates the occurrence number of specified character from end

  গ

  Second argument indicates the index of the character in first argument

  ঘ

  Second argument indicates the index of the character from the last of the string
• Function replace() accepts _____________ arguments.
  ক

  1

  খ

  2

  গ

  3

  ঘ

  4
• String trim() function is used to _______________________
  ক

  Remove all the white spaces from the string

  খ

  Remove white space from start of string

  গ

  Remove white space at end of string

  ঘ

  Remove white space from both the ends of string
• String class provides function toUpper() to _____________________
  ক

  Convert first character to uppercase

  খ

  Convert last character to uppercase

  গ

  Convert the whole string characters to uppercase

  ঘ

  Convert uppercase to lower and lower to uppercases
• The compareTo() function is used to ________________
  ক

  Compare strings value to string object

  খ

  Compare string value to string value

  গ

  Compare string object to another string object

  ঘ

  Compare string object to another string value
• Function equals() is _______________ and equalIgnoreCase() is _________________
  ক

  Case Insensitive, case insensitive

  খ

  Case sensitive, Case insensitive

  গ

  Case sensitive, case sensitive

  ঘ

  Case insensitive, case sensitive
• The function lastIndexOf() is used to ___________________
  ক

  Get the index of last occurrence of specified character in argument

  খ

  Get the index of first occurrence of specified character in argument

  গ

  Get the index of last occurrence of first character in string

  ঘ

  Get the index of last occurrence of last character of string
• String class have a concat() function that is used to _____________________
  ক

  Replace old string by new string

  খ

  Add two strings

  গ

  Append one string at end of another string

  ঘ

  Remove a string from end of one string
• If two index are given as argument to substring function then ___________________
  ক

  String of length equal to sum of two arguments is returned

  খ

  String starting from first index and of length equal to send argument

  গ

  String starting from first index and of length equal to sum of two arguments

  ঘ

  String starting from first index and ending at second index position
• If only one parameter is passed to substring function then __________________
  ক

  It returns the character at the specified position

  খ

  It returns the string of length 1 from the specified index

  গ

  It returns the string from specified index till the end

  ঘ

  It returns the string from starting of string till the specified index
• Which is the function to get the character present at a particular index in the string?
  ক

  char charAt(index);

  খ

  char charIn(StringName);

  গ

  char charAt(StringName);

  ঘ

  char charIn(index);
• What does function length do in String class?
  ক

  Returns length of string including null character

  খ

  Returns length of string excluding null character

  গ

  Returns length of substring

  ঘ

  Returns size of string in bytes
• How to declare an object of class String?
  ক

  String object_Name = value;

  খ

  String object_name = new;

  গ

  String object_name= new value;

  ঘ

  String object_name= value new;
• Which is a true statement for object of String class?
  ক

  Object are immutable

  খ

  Object are mutable

  গ

  Object are created only once

  ঘ

  Object can’t be created
• Which among the following is a serialization descriptor for any class?
  ক

  StreamClass

  খ

  ObjectStreamClass

  গ

  ObjectStream

  ঘ

  StreamObjectClass
• RandomAccessFile can be used to _______________________
  ক

  Read from a random access file

  খ

  Write to a random access file

  গ

  Read and write to a random access file

  ঘ

  Restricts read and write to a random access file
• PushBackReader allows the streams to be pushed back to the stream.
  ক

  True

  খ

  False
• Which exception handler can be used when character encoding is not supported?
  ক

  UnsupportedException

  খ

  UnsupportedEncodingException

  গ

  SupportException

  ঘ

  EncodingException
• StringReader handles _____________________
  ক

  Any character stream

  খ

  A character stream whose source is an array

  গ

  A character stream whose source is character array

  ঘ

  A character stream whose source is String only
• Which class can handle IO class interrupt?
  ক

  ExceptionIO

  খ

  InteruptedIO

  গ

  InteruptedIOException

  ঘ

  IOInteruptException
• Reader class is _________________
  ক

  Used to read from files

  খ

  Abstract class to read character streams

  গ

  Abstract class to input character streams

  ঘ

  Used to take input from standard input stream
• Which class among the following makes incorrect assumptions?
  ক

  LineNumberInputStream

  খ

  LineNumberReader

  গ

  LineReader

  ঘ

  LineBuffer
• What does FilePermission class do?
  ক

  This class is used to give permission rights to a file

  খ

  This class is used to restrict the use of permissions

  গ

  This class is used to represent device access permissions

  ঘ

  This class is used to represent file access permissions
• FileInputStream _________________________
  ক

  Gets the input stream from any device file

  খ

  Gets the input stream from any open socket

  গ

  Gets the input stream from any cache

  ঘ

  Gets the input stream from any open file only
• What is a FileDescriptor?
  ক

  A handle for machine specific structure of an open file

  খ

  A handle for program specific structure of an open file

  গ

  A handle for compiler specific structure of an open file

  ঘ

  A handle for representing device files structure
• File class is ____________________________
  ক

  An abstract of file representation only

  খ

  An abstract of path names only

  গ

  An abstract which can be used to represent path names or file

  ঘ

  An abstract which can represent a file in any format
• Which among the following class contains the methods to access character based console device?
  ক

  Console

  খ

  File

  গ

  Device

  ঘ

  Pipe
• IO class provides input and output through ______________________
  ক

  Data streams

  খ

  Serialization

  গ

  File system

  ঘ

  Data streams, serialization and file system
• What is the use of IO class?
  ক

  To handle all the input operations

  খ

  To handle all the output operations

  গ

  To handle all the input and output operations

  ঘ

  To handle all the input and output to the standard input