linuxc獲取IP地址的命令代碼
時(shí)間：
恒輝636由 分享
#include
#include
#include
#include
#include
#include
#include
int main(int argc, char **argv)
{
int sockfd;
struct ifreq ifr;
char *ifname="eth0";
strncpy(ifr.ifr_name, ifname, IFNAMSIZ-1);
sockfd = socket(AF_INET, SOCK_STREAM, 0);
if(ioctl(sockfd, SIOCGIFADDR, &ifr) == -1)
{
printf("Error\n");
return;
}
struct sockaddr_in *myaddr;
myaddr = (struct sockaddr_in*)&(ifr.ifr_addr);
printf("IP: %s\n", inet_ntoa(myaddr->sin_addr));
}