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 #include #include #include #include #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; }