/* 编译环境: visual c++ */
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- #include <stdio.h>
- #include <winsock2.h>
- #pragma comment(lib,"ws2_32.lib")
- int doit(int, char **)
- {
- char host_name[255];
- //获取本地主机名称
- if (gethostname(host_name, sizeof(host_name)) == SOCKET_ERROR) {
- printf("Error %d when getting local host name./n", WSAGetLastError());
- return 1;
- }
- printf("Host name is: %s/n", host_name);
- //从主机名数据库中得到对应的“主机”
- struct hostent *phe = gethostbyname(host_name);
- if (phe == 0) {
- printf("Yow! Bad host lookup.");
- return 1;
- }
- //循环得出本地机器所有IP地址
- for (int i = 0; phe->h_addr_list[i] != 0; ++i) {
- struct in_addr addr;
- memcpy(&addr, phe->h_addr_list[i], sizeof(struct in_addr));
- printf("Address %d : %s/n" , i, inet_ntoa(addr));
- }
- return 0;
- }
- int main(int argc, char *argv[])
- {
- WSAData wsaData;
- if (WSAStartup(MAKEWORD(1, 1), &wsaData) != 0) {
- return 255;
- }
- int retval = doit(argc, argv);
- WSACleanup();
- return retval;
- }
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