Factorial of a Number [C/C++]

//Coded by : dL1nkx
//Copyright: dL1nkx.blogspot.com
#include<stdio.h>
int main ()
{
int i,num,factorial=1;
printf("ENTER THE NUMBER");
scanf("%d",&num);
if(num<0)
printf("Factorial not possible");
else
{
  for (i=1;i<=num;i++)
  {factorial=factorial*i;}
  printf("\nFACTORIAL=%d\n",factorial);     
}
return 0;
}