这些天我一直在阅读 dhcpd 源代码，其中有很多这样的用法，我不明白那是什么......
当struct packet *packet;参数列表和{?
int locate_network (packet)
struct packet *packet;
{
struct iaddr ia;
struct data_string data;
struct subnet *subnet = (struct subnet *)0;
struct option_cache *oc;
if ((oc = lookup_option(&agent_universe, packet->options,
RAI_LINK_SELECT)) == NULL)
oc = lookup_option(&dhcp_universe, packet->options,
DHO_SUBNET_SELECTION);
//.........
}