Program in C to find the factorial of a number using "do while" loop

Write a program in C to find the factorial of a number using "do while" loop 

#include<stdio.h>

#include<conio.h>

void main()

{

            int n,f=1;

            clrscr();

            printf("enter any number=");

            scanf("%d",&n);

            do

            {

                        f=f*n;

                        n--;

            }

            while(n>0);

            printf("factorial number is=%d",f);

            getch();

}