#include <stdlib.h>

int main(int argc, char *argv[])
{
char text[1024];
static int test_val = -72;

  if(argc < 2)
  {
    printf("Usage: %s <text to print>\n", argv[0]);
    exit(0);
  }
  strcpy(text, argv[1]);

  printf("The right way:\n");
// The right way to print user-controlled input:
  printf("%s", text);
// ---------------------------------------------

  printf("\nThe wrong way:\n");
// The wrong way to print user-controlled input:
  printf(text);
// ---------------------------------------------
  printf("\n");

// Debug output
printf("[*] test_val @ 0x%08x = %d 0x%08x\n", &test_val, test_val, test_val);

  exit(0);
}