c++ gethostbyaddr with user input

I am writing c++ code for a telnet client. I am having problems getting the host address from the user input.

struct in_add开发者_运维问答r peers;

cin>>peers;

peerserver = gethostbyaddr((const char*)peers,4,AF_INET);

if (peerserver == NULL)
    exit(0);

I am new to c++, can anyone suggest a better way of getting the host addr with user input. Thanks in advance.

What you're looking for is gethostbyname, not gethostbyaddr. gethostbyaddr assumes that you've already got the IP address.

char peers[256];
cin >> peers;
struct hostent *ent = gethostbyname(peers);
printf("%04x\n", *(int *)(ent->h_addr));