Program to find area of rectangle and circle using Function Overloading

    #include <iostream.h>
    float area (float, float);                  // prototypes
    float area (float);
    void main( )
    {
        cout << "Area of a rectangle = " << area(1.5, 3.6);
        cout << "\nArea of a circle  = " << area(2.5) << "\n";
    }
    float area(float length, float width)    // Definition - 1
    {
        return(length * width);
    }
    float area(float radius)                // Definition - 2
    {
        return(3.142 * radius * radius);
    }