Trying to open a socket

This is the code I am using to try to open a socket using
win32 APIs :

#include <Winsock2.h>
#include <string.h>
#include <stdio.h>

int main(int argc, char* argv[])
{
     char url[14];
     SOCKET socket;
     SOCKADDR_IN ip_addrs;
     int connResult = 0;

     //Setting up the IP Address structure
     ip_addrs.sin_family = SOCK_STREAM;
     ip_addrs.sin_port = 25;
     ip_addrs.sin_addr.S_un.S_un_b.s_b1 = 189;
     ip_addrs.sin_addr.S_un.S_un_b.s_b2 = 136;
     ip_addrs.sin_addr.S_un.S_un_b.s_b3 = 145;
     ip_addrs.sin_addr.S_un.S_un_b.s_b4 = 10;

     printf("Starting mail application \n");
     printf("Name length = %d\n",sizeof(ip_addrs));

     
     connResult = connect(socket,(sockaddr*)&ip_addrs,sizeof(ip_addrs));
     if(connResult==0) printf("Connection OK...!\n");
     else printf("Connection Failed...!!!\n");
     return 0;
}

I think everything is ok. However, compilation fails and throws the following error :

Linking...
MainBlock.obj : error LNK2001: unresolved external symbol __imp__connect@12
Debug/MyMail2.exe : fatal error LNK1120: 1 unresolved externals
Error executing link.exe.

MyMail2.exe - 2 error(s), 2 warning(s)

Any idea what could be happening? If not, please would you
let me know how to open a socket connection using win32 APIs?

NOT MFC PLEASE!

Thanks a lot for your time.