inline function in C++

Prog 14 write a program to find area of circle and rectangle using inline function

#include<iostream.h>

#include<conio.h>

inline float cir(float r)

{

return (3.14*r*r);

}

inline float rec(float l,float b)

{

return (l*b);

}

void main()

{

clrscr();

cout<<"\n circle = "<<cir(3.6);
cout<<"\n Rectangle = "<<cir(3,3.2);

}