/*  factrecp.c  */
/*  print ver.  */

#include <stdio.h>

int nm; /* mem number */

int fact(int n)
{
    int nb;

    nm++;
    printf("Func IN  : n=%d :  mem number = %d \n",n, nm);

    nb=1;   
    if (n > 1) { nb=fact(n-1)*n; }

    nm--;
    printf("Func OUT : n=%d :  mem number = %d \n",n, nm);

    return nb;
}

int main(void)
{

    int n,f;

    n=10;

    printf("S ----------------\n");

    nm=0;
    f=fact(n);

    printf("E ----------------\n");

    printf("%d! = %d\n",n,f);

    return 0;
}