/* Factorial - Program to find factorial of a given number (using for loop) */

#include  <stdio.h>
#include  <conio.h>

void main()
{
    int  i, n ;
    long  f=1 ;  /* Factorials are long numbers */
    clrscr() ;
    printf("Enter an integer greater than or equal to zero: ") ;
    scanf("%d", &n) ;
    for(i=1 ; i<=n ; i++)
        f=f*i ;
    printf("Factorial of %d is %ld", n, f) ;
    getch() ;
}
/*
Output 1:

Enter an integer greater than or equal to zero: 0
Factorial of 0 is 1

Output 2:

Enter an integer greater than or equal to zero: 3
Factorial of 3 is 6
*/