New Operator MCQ

Test your knowledge with important New Operator MCQ and their applications. These MCQs are beneficial for competitive exams too. Explore 30 + more New Operator MCQs at Bissoy

• How does compiler convert “::operator new” implicitly?
  ক

  ::operator new( sizeof( type ) )

  খ

  ::operator new( sizeof( ) )

  গ

  new operator :: type sizeof( type )

  ঘ

  new sizeof( type ) operator
• If a new operator is defined for a class and still global new operator have to be used, which operator should be used with the keyword new?
  ক

  Colon

  খ

  Arrow

  গ

  Dot

  ঘ

  Scope resolution
• The new operator _________________
  ক

  Invokes function operator new

  খ

  Doesn’t invoke function operator new

  গ

  Invokes function operator only if required

  ঘ

  Can’t invoke function operator new implicitly
• The objects allocated using new operator ________________
  ক

  Are destroyed when they go out of scope

  খ

  Are not destroyed even if they go out of scope

  গ

  Are destroyed anytime

  ঘ

  Are not destroyed throughout the program execution
• Initializers __________________
  ক

  Are used for specifying arrays

  খ

  Are used to defined multidimensional arrays

  গ

  Can’t be specified for arrays

  ঘ

  Can’t be specified for any data
• Which among the following is added in grammar of new operator?
  ক

  Finalize

  খ

  Arg

  গ

  Initializer

  ঘ

  Allocator
• The new operator _____________
  ক

  Can allocate reference types too

  খ

  Doesn’t allocate reference types

  গ

  Can allocate reference to objects

  ঘ

  Doesn’t allocate any data
• For declaring data by using new operator ____________________
  ক

  Type name can’t contain const

  খ

  Type name can’t contain volatile

  গ

  Type name can’t contain class declarations

  ঘ

  Type name can’t contain const, volatile, class declaration or enumerations
• Which among the following is correct syntax to declare a 2D array using new operator? = new char; b) char (pchar) = new char; c) char (*char) = new char; d) char (*char)= new char;
  ক

  char (*pchar) = new char;

  খ

  10

  গ

  10

  ঘ

  10
• In C++, if new operator is used, when is the constructor called?
  ক

  Before the allocation of memory

  খ

  After the allocation of memory

  গ

  Constructor is called to allocate memory

  ঘ

  Depends on code
• If new throws an error, which function can be called to write a custom exception handler?
  ক

  _set_handler

  খ

  _new_handler

  গ

  _handler_setter

  ঘ

  _set_new_handler
• What happens when new fails?
  ক

  Returns zero always

  খ

  Throws an exception always

  গ

  Either throws an exception or returns zero

  ঘ

  Terminates the program
• Microsoft C++ Components extensions support new keyword to _____________
  ক

  Modify a vtable

  খ

  Replace a vtable slot entry

  গ

  Add new vtable slot entries

  ঘ

  Rearrange vtable slot entries
• What is the new operator?
  ক

  Allocates memory for an object or array

  খ

  Allocates memory for an object or array and returns a particular pointer

  গ

  Used as return type when an object is created

  ঘ

  Used to declare any new thing in a program