#ifdef vxworks
# include <stdio.h>
static int
atoi (char *z)
{
int i = 0;
while (*z >= '0' && *z <= '9')
i = i * 10 + (*z++ - '0');
return i;
}
void vxmain (char *arg)
{
char *argv[2];
argv[0] = "";
argv[1] = arg;
main (2, argv, (char **) 0);
}
#else
# include <stdio.h>
# include <stdlib.h>
#endif
int main (int argc, char *argv[], char **envp)
{
int factorial (int);
#ifdef usestubs
set_debug_traps();
breakpoint();
#endif
#ifdef FAKEARGV
printf ("%d\n", factorial (1));
#else
if (argc != 2) {
printf ("usage: factorial <number>\n");
return 1;
} else {
printf ("%d\n", factorial (atoi (argv[1])));
}
#endif
return 0;
}
int factorial (int value)
{
int local_var;
if (value > 1) {
value *= factorial (value - 1);
}
local_var = value;
return (value);
}