Jak to skompilować

/*
** listener.cpp -- a datagram sockets "server" demo
*/

#include <stdio.h>
#include <stdlib.h>
#include <errno.h>
#include <string.h>
#include <winsock2.h>
#include <Ws2tcpip.h>
#define MYPORT "4950" // the port users will be connecting to

#define MAXBUFLEN 100

// get sockaddr, IPv4 or IPv6:
void * get_in_addr( struct sockaddr * sa )
{
    if( sa->sa_family == AF_INET ) {
        return &((( struct sockaddr_in * ) sa )->sin_addr );
    }
   
    return &((( struct sockaddr_in6 * ) sa )->sin6_addr );
}

int main( void )
{
    int sockfd;
    struct addrinfo hints, * servinfo, * p;
    int rv;
    int numbytes;
    struct sockaddr_storage their_addr;
    char buf[ MAXBUFLEN ];
    size_t addr_len;
    char s[ INET6_ADDRSTRLEN ];
   
    memset( & hints, 0, sizeof hints );
    hints.ai_family = AF_UNSPEC;
    hints.ai_socktype = SOCK_DGRAM;
    hints.ai_flags = AI_PASSIVE; // use my IP
   
    if(( rv = getaddrinfo( NULL, MYPORT, & hints, & servinfo ) ) == - 1 ) {
        fprintf( stderr, "getaddrinfo: %s\n", gai_strerror( rv ) );
        return 1;
    }
   
    // loop through all the results and bind to the first we can
    for( p = servinfo; p != NULL; p = p->ai_next ) {
        if(( sockfd = socket( p->ai_family, p->ai_socktype,
        p->ai_protocol ) ) == - 1 ) {
            perror( "listener: socket" );
            continue;
        }
       
        if( bind( sockfd, p->ai_addr, p->ai_addrlen ) == - 1 ) {
            closesocket( sockfd );
            perror( "listener: bind" );
            continue;
        }
       
        break;
    }
   
    if( p == NULL ) {
        fprintf( stderr, "listener: failed to bind socket\n" );
        return 2;
    }
   
    freeaddrinfo( servinfo );
   
    printf( "listener: waiting to recvfrom...\n" );
   
    addr_len = sizeof their_addr;
    if(( numbytes = recvfrom( sockfd, buf, MAXBUFLEN - 1, 0,
    reinterpret_cast < struct sockaddr *>( & their_addr ),( int * ) & addr_len ) ) == - 1 ) {
        perror( "recvfrom" );
        exit( 1 );
    }
   
    printf( "listener: got packet from %s\n",
    inet_ntop( their_addr.ss_family,
    get_in_addr(( struct sockaddr * ) & their_addr ),
    s, sizeof s ) );
    printf( "listener: packet is %d bytes long\n", numbytes );
    buf[ numbytes ] = '\0';
    printf( "listener: packet contains \"%s\"\n", buf );
   
    closesocket( sockfd );
   
    return 0;
}