Question

C++，在windows下获取本机ip地址

Answer 1

这样的代码很常见

#include <WinSock2.h>
#include <iostream>
using namespace std;
#pragma comment(lib, "ws2_32.lib");

int main()
{
WSADATA wsaData;
WORD sockVersion = MAKEWORD(2, 2);
::WSAStartup(sockVersion, &wsaData);

char lv_name[50];
gethostname(lv_name, 50);
hostent * lv_pHostent;
lv_pHostent = (hostent *)malloc(sizeof(hostent));
if( NULL == (lv_pHostent = gethostbyname(lv_name)))
{
printf("get Hosrname Fail \n");
return 0;
}
SOCKADDR_IN lv_sa;
lv_sa.sin_family = AF_INET;
lv_sa.sin_port = htons(6000);
memcpy(&lv_sa.sin_addr.S_un.S_addr, lv_pHostent->h_addr_list[0], lv_pHostent->h_length);
printf("%s\n", inet_ntoa(lv_sa.sin_addr));
free(lv_pHostent);
return 0;
}

Answer 2

dos环境下输入ipconfig
就行了