Function Overloading:

• Create more than one function with the same name.
• The area of square depends on the length of one side.
• The area of retangular depends on width and length.
• The area of circle depends on radius.
• We can have the following three functions in the same function name.
• int Area(int side)
• int Area(int width, int length)
• float Area(float radius)

 
#include <iostream.h>

int Area(int side);
int Area(int width, int length);
float Area(float radius);

void main()
{
 int s, w, l;
 float r;

 cout<<"Enter the length of a side of a square. \n";
 cin >> s;
 cout<<"The area of the square is "<<Area(s) <<endl;
 cout<<"Enter the length and width of a retangle. \n";
 cin >> l >> w;
 cout<<"The area of the retangle is "<<Area(w,l) <<endl;
 cout<<"Enter the radius of circle. \n";
 cin >> r;
 cout<<"The area of the circle is "<<Area(r) <<endl;

}

int Area(int side)
{
 return side * side;
}
int Area(int width, int length)
{
 return width * length;
}
float Area(float radius)
{
 return 3.14 * radius * radius;
}