#include <stdio.h>
#include <string.h>

int main(int argc, char *argv[]) {
   int value = 5;
   char buffer_one[8], buffer_two[8];
   
   strcpy(buffer_one, "one");
   strcpy(buffer_two, "two");   
   printf("[BEFORE] buffer_two is at %p and contains \'%s\'\n", buffer_two, buffer_two);
   printf("[BEFORE] buffer_one is at %p and contains \'%s\'\n", buffer_one, buffer_one);
   
   printf("[BEFORE] value is at %p and is %d (0x%08x)\n", &value, value, value);
   
   printf("\n[STRCPY] copying %d bytes into buffer_two\n\n",  strlen(argv[1]));
   strcpy(buffer_two, argv[1]); /* Copy first argument into buffer_two. */
   
   printf("[AFTER] buffer_two is at %p and contains \'%s\'\n", buffer_two, buffer_two);
   printf("[AFTER] buffer_one is at %p and contains \'%s\'\n", buffer_one, buffer_one);
   printf("[AFTER] value is at %p and is %d (0x%08x)\n", &value, value, value); 
}