windows下使用winsock获得本机ipv4地址

windows下使用winsock获得本机ipv4地址

#include 

int main ()

{

    char ac[80];

    struct hostent *phe;

    struct in_addr addr;

    int i;

    if (gethostname(ac, sizeof(ac)) == SOCKET_ERROR) {

        printf("ERROR when getting local host name.\r\n");

        return -1;

    }

    phe = gethostbyname(ac);

    if (phe == 0) {

        printf("ERROR Bad host lookup.\r\n");

        return -1 ;

    }

    for (i=0; phe->h_addr_list[i] != 0, i++) {

        memcpy(&addr, phe->h_addr_list[0], sizeof(struct in_addr));

        printf("Address:%s", inet_ntoa(addr));

    }

    return 0;

}