套接字生成错误

我正在尝试构建一个简单的套接字。

#include<stdio.h>
#include<winsock2.h>
#include<ws2tcpip.h>

int getaddrinfo(const char *node,
                const char *service,
                const struct addrinfo *hints,
                struct addrinfo **res);

int main(int argc, char *argv[])
{
    WSADATA wsa;
    SOCKET a;
    printf("Initializing...");
    if(WSAStartup(MAKEWORD(2,2),&wsa)!=0);
        printf("Failed, Error:%d",WSAGetLastError());
    if((a=socket(AF_INET,SOCK_STREAM,0))==INVALID_SOCKET);
        printf("Failed, Error:",WSAGetLastError());
    return 0;
}