Write an program in C++ to finding cube using inline function in c++

#include<iostream.h>
#include<conio.h>
#include<stdio.h>
     inline int cube(int r)
{ return r*r*r;
            }
void main()
{
clrscr();
int r;
cout<<"program to compute cube\n";
cout<<"enter value of compute cube:";
cin>>r;
cout<<"cube of the number:"<<cube(r);
getch();
}