关于gethostname函数失败的问题

调用gethostname之前, 要先调用WSAStartup才可以, 否则gethostname会失败!

下面是正确的代码

#include <stdio.h>#include <stdlib.h>#include <string.h>#include <Winsock2.h>#include <windows.h>#pragma comment(lib, "Ws2_32")int main(){WSADATA wsData;::WSAStartup(MAKEWORD(2,2), &wsData);char szIP[32] = {0};char szHostName[32] = {0};int iResult = ::gethostname(szHostName, sizeof(szHostName));if (iResult != 0){printf("error/n");return -1;}printf("%s/n", szHostName);hostent *pHost = ::gethostbyname(szHostName);::WSACleanup();return 0;}