3. (B) Design a class Geometry containing the methods area() and volume() and also overload the area() function .

3. (B) Design a class Geometry containing the methods area() and volume() and also overload the area() function .

	#include<iostream.h>
	#include<conio.h> #include<stdlib.h>
	#define pi 3.14
	class fn
	{
	public:
	void area(int); //circle
	void area(int,int); //rectangle
	void area(float ,int,int); //triangle
	void volume(int);
	};
	void fn::area(int a)
	{
	cout<<"Area of Circle:"<<pi*a*a;
	}
	void fn::area(int a,int b)
	{
	cout<<"Area of rectangle:"<<a*b;
	}
	void fn::area(float t,int a,int b)
	{
	cout<<"Area of triangle:"<<t*a*b;
	}
	void fn::volume(int r)
	{
	cout<<"volume of sphere is "<<4/3*3014*r*r*r;
	}
	void main()
	{
	int ch;
	int a,b,r;
	clrscr();
	fn obj;
	cout<<"\n\t\tFunction Overloading";
	cout<<"\n1.Area of Circle\n2.Area of Rectangle\n3.Area of Triangle\n4.Volume of sphere\n5.Exit\n:";
	cout<<"Enter your Choice:";
	cin>>ch;
	switch(ch)
	{
	case 1:
	cout<<"Enter Radious of the Circle:";
	cin>>r;
	obj.area(r);
	break;
	case 2:
	cout<<"Enter Sides of the Rectangle:";
	cin>>a>>b;
	obj.area(a,b);
	break;
	case 3:
	cout<<"Enter Sides of the Triangle:";
	cin>>a>>b;
	obj.area(0.5,a,b);
	break;
	case 4:
	cout<<"Enter Sides of the Volume:";
	cin>>r;
	obj.volume(r);
	break;
	case 5:
	exit(0);
	}
	getch();
	}