CS 101:
                Computer Programming and 
                                 Utilization
                                       Puru
                                        with
                                CS101 TAs and Staff
                Course webpage: https://www.cse.iitb.ac.in/~cs101/
                            Lecture 26: Wrap up 
                               CS101 Autumn 2019 @ CSE IIT Bombay
  The C++ Standard Library
   •  Comes with every C++ distribution
   •  Contains many functions and classes that you are likely to need in 
      day to day programming
   •  The classes have been optimized and debugged thoroughly
   •  If you use them, you may be able to write programs with very little 
      work
   •  Highly recommended that you use functions and classes form the 
      standard library whenever possible
   •  Files, Strings, Maps, Vectors, Sets, Lists, 
      Queues …
                             CS101 Autumn 2019 @ CSE IIT Bombay            2
  Key building blocks the library
   • Generalized entities available as template classes
      –member variables and functions
   • C++ support for object oriented programming
      –constructors, copy constructors, destructors, operator 
         overloading, templates …
      –Dynamic memory management
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  heap memory to be handle carefully
   int* iptr;
   iptr = new int;
   *iptr = …;
   delete iptr;
   *iptr = ...;   // dangling reference!
   // memory leak                // memory leak 
   int *iptr;                    {  int *iptr;
   iptr = new int;                   iptr = new int;
   iptr = new int;               }
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