1 unsigned short code = 0x0000; 2 unsigned short low = 0x4000; 3 unsigned short high = 0xb000; 4 main(void)5int main (void) 6 { 7 if ( 8 (high & 0x8000) != (low & 0x8000) 9 && ( low & 0x4000) == 0x4000 10 && (high & 0x4000) == 0 11 ) 12 { 13 code ^= 0x4000; 14 low |= 0x4000; 15 } 16 17 exit (0); 18 } 19