CS 101:
                Computer Programming and 
                                 Utilization
                                      Puru
                                       with
                               CS101 TAs and Staff
                Course webpage: https://www.cse.iitb.ac.in/~cs101/
         Lecture 20:C++ and object oriented programming
                               CS101 Autumn 2019 @ CSE IIT Bombay
          Object Oriented Programming
      A methodology for designing programs
                            CS101 Autumn 2019 @ CSE IIT Bombay          2
  The C++ structure
   •  Member variables
      − Basic facility provided in C++ to conveniently gather together 
        information associated with an entity
      − Inherited from the C language
   •  Member functions
      − New feature introduced in C++
      − Actions/operations that effect the entity
   − User defined data type with variables and functions
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  Nested structures (structure is a data type!)
     struct Point{ 
        double x,y; 
     };
     struct Disk{ 
        Point center;    // contains Point
        double radius;
     };
     Disk d;
     d.radius = 10;
     d.center = {15, 20}; 
     // sets the x {member of center member of d
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