获取板子网卡Ip

积累点滴，一种获取板子网卡Ip方法
 1 int main()
 2 {
 3     struct ifreq stIfconfig;
 4 
 5     char szIPeth0[16];
 6     char szIPeth1[16];
 7     memset(szIPeth0,0x0,16);
 8     memset(szIPeth1,0x0,16);
 9 
10     int nNetWorkSocket = socket(AF_INET, SOCK_DGRAM, 0);
11 
12     //获取eth0的ip
13     strncpy(stIfconfig.ifr_name, "eth0",5);
14     if (ioctl(nNetWorkSocket, SIOCGIFADDR, &stIfconfig) < 0)
15     {
16         printf("ioctl does not get eth0!")
17     }
18     else
19     {
20         strncpy(szIPeth0,inet_ntoa(((struct sockaddr_in*)&(stIfconfig.ifr_addr))->sin_addr),16);
21     }
22 
23     //获取eth1的ip
24     strncpy(stIfconfig.ifr_name, "eth1",5);
25     if (ioctl(nNetWorkSocket, SIOCGIFADDR, &stIfconfig) < 0)
26     {
27         printf("ioctl does not get eth1!")
28     }
29     else
30     {
31         strncpy(szIPeth1,inet_ntoa(((struct sockaddr_in*)&(stIfconfig.ifr_addr))->sin_addr),16);
32     }
33     
34     printf("eth0 = %s", szIPeth0);
35     printf("eth1 = %s", szIPeth1);
36     
37 }