/* The World's Most Boring C Program
 *   Octal escape sequences
 *   Check the return value of printf() using a wrapper function
 */

#include <stdio.h>

void Printf(const char *str)
{
  static int c = 0;

  /* printf() returns the number of characters printed, possibly 0,
   *   or a negative value if there was an error.
   */
  int r = printf(str);

  /* This failure test only works if str is a one-character string,
   *   not including the terminating null character.
   */
  if (r != 1)
    fprintf(stderr, "%d: returned %d instead of 1, character '%c'\n", c, r, c);

  c++;
}

int main(void)
{
  Printf("\000");
  Printf("\001");
  Printf("\002");
  Printf("\003");
  Printf("\004");
  Printf("\005");
  Printf("\006");
  Printf("\007");
  Printf("\010");
  Printf("\011");
  Printf("\012");
  Printf("\013");
  Printf("\014");
  Printf("\015");
  Printf("\016");
  Printf("\017");
  Printf("\020");
  Printf("\021");
  Printf("\022");
  Printf("\023");
  Printf("\024");
  Printf("\025");
  Printf("\026");
  Printf("\027");
  Printf("\030");
  Printf("\031");
  Printf("\032");
  Printf("\033");
  Printf("\034");
  Printf("\035");
  Printf("\036");
  Printf("\037");
  Printf("\040");
  Printf("\041");
  Printf("\042");
  Printf("\043");
  Printf("\044");
  Printf("\045");
  Printf("\046");
  Printf("\047");
  Printf("\050");
  Printf("\051");
  Printf("\052");
  Printf("\053");
  Printf("\054");
  Printf("\055");
  Printf("\056");
  Printf("\057");
  Printf("\060");
  Printf("\061");
  Printf("\062");
  Printf("\063");
  Printf("\064");
  Printf("\065");
  Printf("\066");
  Printf("\067");
  Printf("\070");
  Printf("\071");
  Printf("\072");
  Printf("\073");
  Printf("\074");
  Printf("\075");
  Printf("\076");
  Printf("\077");
  Printf("\100");
  Printf("\101");
  Printf("\102");
  Printf("\103");
  Printf("\104");
  Printf("\105");
  Printf("\106");
  Printf("\107");
  Printf("\110");
  Printf("\111");
  Printf("\112");
  Printf("\113");
  Printf("\114");
  Printf("\115");
  Printf("\116");
  Printf("\117");
  Printf("\120");
  Printf("\121");
  Printf("\122");
  Printf("\123");
  Printf("\124");
  Printf("\125");
  Printf("\126");
  Printf("\127");
  Printf("\130");
  Printf("\131");
  Printf("\132");
  Printf("\133");
  Printf("\134");
  Printf("\135");
  Printf("\136");
  Printf("\137");
  Printf("\140");
  Printf("\141");
  Printf("\142");
  Printf("\143");
  Printf("\144");
  Printf("\145");
  Printf("\146");
  Printf("\147");
  Printf("\150");
  Printf("\151");
  Printf("\152");
  Printf("\153");
  Printf("\154");
  Printf("\155");
  Printf("\156");
  Printf("\157");
  Printf("\160");
  Printf("\161");
  Printf("\162");
  Printf("\163");
  Printf("\164");
  Printf("\165");
  Printf("\166");
  Printf("\167");
  Printf("\170");
  Printf("\171");
  Printf("\172");
  Printf("\173");
  Printf("\174");
  Printf("\175");
  Printf("\176");
  Printf("\177");

  return 0;
}