A class with no data members

[Rahul Deshmukh]

Develop a class with no data members and having following functions
Area() of circle
Area() of rectangle
Area() triangle by heron's formula use this function in main program by creating objects of class.

[vlad from moscow]

Could you remind of heron's formula?

I think that the class should contain three overloaded functions Area which accepts correspondingly 1, 2 and 3 arguments.

Only I do not understand why is required to create objects of the class because these functions can be declared as static?

[Rahul Deshmukh]

Perimeter = A + B + C
S = Perimeter/2
Area = sqrt(S(S − A)(S − B)(S − C))

[vlad from moscow]

struct ShapeArea
{
   static double Area( double ); // for circles
   static double Area( double, double ); // for rectangles
   static double Area( double, double, double ); // for triangles
};

And their definitions as for example of that with three parameters

double Area( double a, double b, double c )
{
   double s = ( a + b + c ) / 2;
   return ( std::sqrt( s * ( s − a) * ( s − b ) * ( s − c) ) );
}

[Daleth]

Is this supposed to be a function object whose class is called Area?

[vlad from moscow]

In the original post there is written about functions Area.