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How can we get the ip of my computer using C program?

Posted on 2002-07-09
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How can we get the IP of my computer using C program?
Please tell me the sample code by C.
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Question by:mathematics
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makerp earned 200 total points
ID: 7140673
you will need to include the socket headers and link to the sockets library, this uses stl, so include <string> aswell

string get_ip_address_from_host_name(string host_name)
{
     string retval;
     struct hostent *host;
     struct sockaddr_in addr;
     if((host = gethostbyname(host_name.c_str())) != NULL)          
     {
          memcpy((char*)&addr.sin_addr,host->h_addr,host->h_length);
          retval = inet_ntoa(addr.sin_addr);
     }
     return retval;
}
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by:mathematics
ID: 7142237
Thank you very much,makerp.
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