example for find area of circle and cone using function overloading in C++

Prog 18 : Write a program to find area of circle and cone using function overloading

#include <iostream.h>

#include<conio.h>

float area(float,float);
 float area(float);

float area(float r,float h)

{

return(1/3*(3.14*r*r*h));

}

float area(float c)

{

return(3.14*c*c);

}

void main()

{

clrscr();

cout<<"\nArea of cone ="&lt;<area(2.3f);
cout<<"\nArea of circle ="&lt;<area(2.3f,5.2f);
getch();

}