What are classes and objects in Python?

An object is defined as an instance of a class that possesses attributes, while a class is a collection of objects. An entity with a state and behavior is the object. A class contains all the same characteristics, therefore if we have a class of students, it will only contain information about the individuals themselves, such as their names, topics, attendance rates, etc.

In subsequent lectures, you will learn a variety of new OOP-related terms in addition to classes and objects. Several of these terms include:

• Instances
• Constructor
• Methods
• Abstraction
• Inheritance

We can break up our code into numerous classes by utilising oop. Each class has a specific use or purpose. For instance, if we established a class called “Books,” all of its attributes, such as the number of pages, publication date, price, etc., should be associated with books.

The amount of classes we can construct in a program has no upper bound. A class can also be easily accessed by another class, and its access can be restricted so that other classes cannot utilize its functions. When working on larger tasks, this idea is helpful. Each employee is given a unique duty to complete for the lessons they have been given. And once each class has finished contributing, they can be joined to create the entire project. So now you know that you need to master the OOP idea in order to become a successful programmer.

The post Classes & objects (oops) first appeared on Student Projects.

ALGORITHM

1. Start the process
2. Invoke the class with pointer
3. Assign ptr[0] <- &objb; i. Assign ptr[1] <- &objc; 4. Ptr(0)points the getdata() a. Get the values of x and y 5. Ptr(1) points to the getdata() a. Get the roll no and name of the student 6. Ptr(0) and ptr(1) are points to the display() a. Print the values 7. Stop the process PROGRAM

#include
#include
			
	class base
	{
		private: int x;
			float y;
		public:  
			virtual void getdata( );
			virtual void display( );
	};
	class devb: public base
	{
		private: int roll;
			char name[20];
		public:  virtual void getdata( );
			virtual void display( );
	};
	class devc : public  base
	{
		private: float height;
			float weight;
		public : virtual void getdata( );
			 virtual void display( );
	}:
	void base :: getdata( )
	{
		cout<<” Enter any Integer”;
		cin>>x;
		cout<<”Enter a real no”;
		cin>>y;
	}
	void base ::display( )
	{
		cout<<”The no X=”<>roll;
		cout<<”Enter Name of Student :”;
		cin>>name;
	}
	void devc :: getdata( )
	{
		cout<<”Enter height and weight”;
		cin>>height>>weight;
	}
	void devc :: display( )
	{
		cout<<”Height :”<getdata( );
		ptr[1] -> getdata( );
		ptr[1] -> display( );
		ptr[1] -> display( );
		getch ( );
  	}

OUTPUT

Enter the Roll of the Student: 101
Enter Name of Student : salah
height and weight 170 72

Roll of the Student is:101
Name of the Student is:salah
Height :170
Weight :72

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