摘要： #include #include #include #include #include char assert_ip(unsigned long ip){ if(!(ip>>31^0x0)) return 'A'; if(!(ip>>30^0x2)) return 'B'; if(!(ip>>29^0x6)) return 'C'; if(!(ip>>28^0xe)) return 'D'; if(!(ip>>27^0xf)) return 'E';}i 阅读全文