#include
#include?
#include?
#pragma?comment（lib“ws2_32“）
#pragma?warning?（disable:4786）
int?scan（char?*ipint?starportint?endport）
{
//端口合法性判斷
if（starport<1||starport>65535||endport<1||endport>65535）
{
printf（“端口超出范圍“）;
return?-1;
}

if（starport>endport）{
????????printf（“起始端口不能高于結束端口\n“）;
????????return?-1;
?}
????
?printf（“掃描開始\n“）;
?????int?i=0;
???
	//初始化套接字
	WORD?sockVersion?=?MAKEWORD（22）;
????WSADATA?wsaData;
???if（WSAStartup（sockVersion?&wsaData）!=0）
???{
?????return?-1;
???}
????for（i=starport;i<=endport;i++）{
????????struct?sockaddr_in?clientaddr;???//創建用戶
????????
????????clientaddr.sin_family=AF_INET;???
????????clientaddr.sin_addr.s_addr=inet_addr（ip）;????//用戶地址?
????????clientaddr.sin_port=htons（i）;?????//