#include <stdio.h>
#include <conio.h>
long int factorial(int n);
void main()
{
int n;
clrscr();
printf("Enter the number:\n");
scanf("%d",&n);
printf("Factorial of %d is %ld",n,f(n));
getch();
}
long int f(int n)
{
if(n<=1)
return(1);
else
{
n=n*f(n-1);
return(n);
}
}