Obtain the IP address and name of a computer.

 

 

 
# Include <winsock2.h># PragmaComment (Lib, "ws2_32 ")
 

 

 Wsadata;  Int  Wsareturn;  Char Name [ 20  ];  Struct Hostent * Psysinfo;  Char Ipaddr [ 20  ]; Wsareturn = Wsastartup (makeword (2 , 2 ),& Wsadata );  If (Wsareturn = 0  ) {Gethostname (name,  20  ); // Obtain the local host name m_strhostname = Name;  //  Updatedata (false ); Psysinfo = Gethostbyname (name); sprintf (ipaddr,  " % D. % d  "  , Psysinfo -> H_addr_list [ 0 ] [ 0 ] & 0x00ff  , Psysinfo -> H_addr_list [ 0 ] [ 1 ] & 0x00ff  , Psysinfo -> H_addr_list [ 0 ] [ 2 ] &0x00ff  , Psysinfo -> H_addr_list [ 0 ] [ 3 ] & 0x00ff  ); M_strip = Ipaddr; updatedata (false );}

You can use the gethostbyaddr function to send the network address to get the corresponding "host". Here, the host may be multiple but more than one
 

StructHostent *Far gethostbyaddr {Const Char* ADDR;//<Input> pointer to the network byte sequential addressIntLen;//Address LengthIntType;//Address type, which must be af_inet};