获取板子网卡Ip

积累点滴，一种获取板子网卡Ip方法

int main()
{
    struct ifreq stIfconfig;

    char szIPeth0[16];
    char szIPeth1[16];
    memset(szIPeth0,0x0,16);
    memset(szIPeth1,0x0,16);

    int nNetWorkSocket = socket(AF_INET, SOCK_DGRAM, 0);

    //获取eth0的ip
    strncpy(stIfconfig.ifr_name, "eth0",5);
    if (ioctl(nNetWorkSocket, SIOCGIFADDR, &stIfconfig) < 0)
    {
        printf("ioctl does not get eth0!")
    }
    else
    {
        strncpy(szIPeth0,inet_ntoa(((struct sockaddr_in*)&(stIfconfig.ifr_addr))->sin_addr),16);
    }

    //获取eth1的ip
    strncpy(stIfconfig.ifr_name, "eth1",5);
    if (ioctl(nNetWorkSocket, SIOCGIFADDR, &stIfconfig) < 0)
    {
        printf("ioctl does not get eth1!")
    }
    else
    {
        strncpy(szIPeth1,inet_ntoa(((struct sockaddr_in*)&(stIfconfig.ifr_addr))->sin_addr),16);
    }
    
    printf("eth0 = %s", szIPeth0);
    printf("eth1 = %s", szIPeth1);
    
}