Write a C program to find Factorial value by recursive function

#include <stdio.h>
#include <conio.h>
int factorial(int);
void main()
{
 int n;
 clrscr();
 printf("Enter Number: ");
 scanf("%d",&n);
 printf("Factorial of %d is %d",n,factorial(n));
 getch();
}
int factorial (int m)
{
 if(m==0||m==1) return 1;
 return m*factorial(m-1);
 }