int main()
{
int i = 0;
char hostname[] = "localhost";
struct sockaddr_in conect;
SOCKET iSocket;
SOCKADDR_IN Info;
   WSADATA wsaData;
    if (WSAStartup(MAKEWORD(2,0), &wsaData) != 0 )
  {
     cout << "Winsock Error, Exiting..." << endl;
     cin.get();
     return 0;
  }
 
  cout << "Target IP: ";
  cin>>IP;
  cout << "Starting Port: ";
  cin>>startPort;
  cout << "End Port: ";
  cin>>endPort;
 
  cin.ignore();
 
  cout << endl << endl << "Scanning..." << endl << endl;
 
  for(int i=startPort; i <= endPort; i++)
  {
 
        iSocket = socket(AF_INET, SOCK_STREAM, 0);

        if (iSocket == -1)
            cout<<"error al abrir el socket";

        conect.sin_addr.S_un.S_addr = inet_addr(IP);
        conect.sin_family = AF_INET;
        conect.sin_port = htons(i);
 
     nret = connect(iSocket, (struct sockaddr *)&conect, sizeof(conect));
 
     if( nret == SOCKET_ERROR)
     {
         cout <<"puerto no abierto " << i << endl;;
     }
     else
     {
        cout << "Port " << i << " - OPEN! " << endl;
     }
     closesocket(iSocket);
   }
   cout << endl << "Finished With Scan..." << endl;
 
   cin.get();
   WSACleanup();
}

      conect.sin_family = AF_INET;
     conect.sin_port = htons(startPort);
 
 nret = bind(iSocket, (struct sockaddr *)&conect, sizeof(conect));

      if( nret == 0)

char b;
for(int a =1; a<20; a++){
                   cin>>b; 
                   cout<<b;
}