| 查看: 425 | 回复: 0 | |||
| 当前主题已经存档。 | |||
sdlj8051金虫 (著名写手)
|
[交流]
通过IP地址查找主机名 findip.c
|
||
|
/* * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. * * * Filename: findip.c * Created : Nov. 10th 1995 @ 4:30pm * Author : SrfRoG (srfrog@itek.net) * Descrip.: This cute little program will attempt to resolve * an IP address to its hostname. Then prints the results * to standard output. * --------------------------------------------------------------------- * To compile this program: * Linux: gcc -O2 -m486 -s -o findip findip.c * AIX, BSD: gcc -O2 -s -o findip findip.c * SunOS: gcc -O2 -lnsl -s -o findip findip.c * Other: cc -o findip findip.c */ ＃i nclude ＃i nclude ＃i nclude ＃i nclude ＃i nclude ＃i nclude int main(argc, argv) int argc; char **argv; { struct hostent *ip; unsigned long hostname; if (argc != 2) { printf("Need to specify an IP address.\n"  ; exit(1); } if ((hostname = inet_addr(argv[1])) == -1) { printf("Could not find %s\n", argv[1]); exit(1); } if ((ip = gethostbyaddr((char *)&hostname, sizeof(long), AF_INET)) != NULL) printf("%s is %s\n", argv[1], ip->h_name); else printf("Could not resolve %s\n", argv[1]); return 0; } [ Last edited by 幻影无痕 on 2006-11-9 at 07:56 ] |
回复此楼» 猜你喜欢
找导师
已经有4人回复
-
我就是申请一个面上项目而已，这评审意见是按照杰青的条件评的吧？
已经有11人回复
-
有多少人是今天查系统知道结果的？
已经有18人回复
-
售SCI文章，我:8O5.5.1.O.54,科目齐全,可+急
已经有4人回复
-
售SCI一区T0P文章，我:8O.55.1.O.54,科目全,可伽急
已经有4人回复
-
售SCI文章，我:8O5.5.1.O.54,科目齐全,可+急
已经有4人回复
-
售SCI一区T0P文章，我:8O.55.1.O.54,科目全,可伽急
已经有4人回复
-
售SCI-T0P文章，我:8O.5.5.1.O.54,科目齐全,可+急
已经有5人回复
-
售SCI一区T0P文章，我:8.O.55.1.O.54,科目齐全,可+急
已经有4人回复
-
售SCI文章，我:8O.5.5.1O.54,科目全,可十急
已经有5人回复
10