#include<stdio.h>
#include<conio.h>
void main()
{
int num,i;
long fact=1;
clrscr();
printf("\n Enter Any Number: ");
scanf("%d",&num);
if(num<=0)
printf("\n Invalid Number! ");
else
{
fact=num;
i=1;
while(i<num)
{
fact=fact*i;
i++;
}
printf("\n Factorial = %ld",fact);
}
getch();
}