Classes Example in C++


Description:

A class in C++ is the building block, that leads to Object-Oriented programming. It is a user-defined data type, which holds its own data members and member functions, which can be accessed and used by creating an instance of that class. A C++ class is like a blueprint for an object.

Example Program:

Find out the area of rectangle using classes in C++

Source Code

#include<iostream>
using namespace std;
class Rectangle
{
public :
    int length;
    int breadth;
    int area()
    {
        return length*breadth;
    }
    int perimeter()
    {
        return 2*(length+breadth);
    }
};
int main()
{
    Rectangle r;
    r.length=5;
    r.breadth=10;
    cout<<"Area : "<<r.area();
    return 0;
}
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Output

Area : 50

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