Object Oriented Programing Concepts

1. Features of OOP
Presented by-
Ms. Shweta Gajbhiye
Asst. Prof. Computer Science and Engineering,
Priyadarshini J. L. college of Engineering
Nagpur

2. Features of OOP
 Class
 Object
 Data hiding
 Encapsulation
 Inheritance
 Polymorphism
 Message Communication

3. Class in C++
• The C++ class is an extension of the C language structure.
• Structure is the collection of heterogeneous datatypes and
also called as user defined datatypes , complex datatypes

4. Structure
void main()
{
int roll_number,marks[5];
char name[10];
}
struct student
{
int roll_number,marks[5];
char name[10];
} s1,s2,s3;

5. Stack
name
roll_number
marks
2 bytes
10 bytes
10 bytes
Total 22 bytes
s1

6.  Structure has some limitations over class

7. Difference between C structure
and C++ structure
struct struct_name
{
data members;
};
struct struct_name
{
data members;
member functions;
};
C structure C++ structure

8. class
class student
{
access specifiers:
data members;
member functions;
};

9. class structure
It supports implementation of
complex programs through
inheritance
It does not support inheritance
By default all the members are
private
By default all the members are
private
Difference between class and structure

10.  Data hiding
 Encapsulation
 Object is an instance of class/class type
variable
 Class is a blueprint
 Class is a logical entity ,object is a physical
entity