#if 1
number (1) in if
#else
rejected number (1) in if
#endif

#if 0
wrongly accepted number (0) in if
#else
number (0) in if
#endif

#if eaf
false hex number in if
#else
rejected false hex number in if
#endif

#if 0x1
real hex number (0x1) in if
#else
rejected real hex number (0x1) in if
#endif

#if 0x00
wrongly accepted real hex number (0x00) in if
#else
hex number (0x00) in if
#endif
