C Language
#include<stdio.h>
#include<conio.h>
void main( )
{
long int n, i, s = 1;
clrscr ( );
printf("Enter any Number = ");
scanf("%1d", & n);,
for (i = 1;i <= n;i++)
{
s= s * i;
}
printf("Factorial = %ld" , s);
getch( );
}
/*OUTPUT*/
Enter any Number = 4
Factorial = 24