1.

बेस क्लास तथा डिराइड क्लास को समझाने हेतु एक प्रोग्राम लिखिए।

Answer»

#include<iostream.h>
class Rectangle //Base class
{
protected:
float length, breadth;
public:
void Input()
{
cout<<"Enter length: "; cin>>length;
cout<<"Enter breadth: "; cin>>breadth;
}
};
class Area : public Rectangle//Derived class
{
public:
float calc()
{
return length*breadth;
};
void main()
{
cout<<"Enter data for find area\n";
Area a;
a. Input();
cout<<"Area = "<<a.calc()<<" square metre\n\n";
}

आउटपुट

Enter data for find area
Enter length: 5
Enter breadth: 2
Area = 10 square metre


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