C++获取站点的ip地址



1. #include "stdafx.h"
2. #include <winsock2.h>
3. #pragma comment (lib,"ws2_32.lib")
4. int _tmain(int argc, _TCHAR* argv[])
5. {
6. p: printf("输入地址:");
7. char szHost[256];
8. memset(szHost,0,256);
9. scanf("%s",szHost);
10. unsigned long lAddr = inet_addr(szHost);
11. if (lAddr == INADDR_NONE)
12. {
13. hostent *pHE = gethostbyname(szHost);
14. if (!pHE)
15. goto p;
16. sockaddr_in sa;
17. for (int iHost=0;pHE->h_addr_list[iHost];iHost++)
18. {
19. char *ip;
20. unsigned int port;
21. memcpy(&sa.sin_addr.s_addr, pHE->h_addr_list[iHost], pHE->h_length);
22. ip = inet_ntoa(sa.sin_addr);printf("%s\n",ip);
23. }
24. }
25. goto p;
26. }