Answer / satya

Smart pointers are objects which store pointers to
dynamically allocated (heap) objects. They behave much like
built-in C++ pointers except that they automatically delete
the object pointed to at the appropriate time. Smart
pointers are particularly useful in the face of exceptions
as they ensure proper destruction of dynamically allocated
objects. They can also be used to keep track of dynamically
allocated objects shared by multiple owners.

Answer / swarna sekhar dhar

Smart pointers have been the subject of hecatombs of code
written and rivers of ink consumed by programmers and
writers around the world. Perhaps the most popular,
intricate, and powerful C++ idiom, smart pointers are
interesting in that they combine many syntactic and semantic
issues. This chapter discusses smart pointers, from their
simplest aspects to their most complex ones and from the
most obvious errors in implementing them to the subtlest
ones—some of which also happen to be the most gruesome.

In brief, smart pointers are C++ objects that simulate
simple pointers by implementing operator-> and the unary
operator*. In addition to sporting pointer syntax and
semantics, smart pointers often perform useful tasks—such as
memory management or locking—under the covers, thus freeing
the application from carefully managing the lifetime of
pointed-to objects

What is malloc in c++?

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What is the handle class?

1 Answers  

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What are Virtual Functions? How to implement virtual functions in "C" ?

3 Answers  

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Does c++ vector allocate memory?

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Differentiate between realloc() and free().

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Is c++ a pure oop language?

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Given an array of size N in which every number is between 1 and N, determine if there are any duplicates in it. You are allowed to destroy the array if you like. [ I ended up giving about 4 or 5 different solutions for this, each supposedly better than the others ].

1 Answers  

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How is memory managed in C++?

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How should a contructor handle a failure?

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What are friend functions in C++?

0 Answers   BlackRock,

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Write down the equivalent pointer expression for referring the same element a[i][j][k][l]?

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