---

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
static char input[20];
static char output[20];
int main(int argc, char *argv[]) {
strcpy(output, "normal output");
strcpy(input, argv[1]);
printf ("input at %p %s\n" , input, input);
printf ("output at %p* %s\n", output, output);
printf("\n%s\n", output);
}