Question

求char **对应数组大小

用c++获取本地所有ip号列表
hostinfo = gethostbyname(name);
char **ipList= hostinfo->h_addr_list;
怎么求ipList的大小用于循环取每个ip

Answer 1

 while
 (remoteHost->h_addr_list[i] != 0) {

                addr.s_addr = *(u_long *) remoteHost->h_addr_list[i++];

                printf(
"\tIPv4 Address #%d: %s\n"
, i, inet_ntoa(addr));

            }

Answer 2

for(char **ipList = hostinfo->h_alddr_list; *ipList != NULL; ipList++)
    printf("%s\n",*ipList);