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C++ Interview Question and Answers - C++ Interview

C++ Interview Question and Answers:

66.     What is a modifier?
      A modifier, also called a modifying function is a member function that changes the value of at least one data member. In other words, an operation that modifies the state of an object. Modifiers are also known as mutators.

67.     What is the difference between a copy constructor and an overloaded assignment operator?
      A copy constructor constructs a new object by using the content of the argument object. An overloaded assignment operator assigns the contents of an existing object to another existing object of the same class.

68.     What do you mean by Stack unwinding?
      It is a process during exception handling when the destructor is called for all local objects between the place where the exception was thrown and where it is caught.

69.     What is a virtual destructor?
      The simple answer is that a virtual destructor is one that is declared with the virtual attribute.

70.     What is STL? and what are the components of stl?    
    A collection of generic classes and functions is called as Standard Template Library (STL).The stl components are
    containers
    Algorithm
    Iterators