Can Any One Write me Full program I have main part

hi,
i have program external ip address not complete arduino mega.
please can expert write me full program can run on mega...
thanks in advance.

here code
_________________________________________________

 void getip()
{
  if (client.connect("api.ipify.org", 80))
  {
    terminal1.println("connected api.ipify.org");
    terminal1.println();
    terminal1.flush();
    client.println("get / http/1.0");
    client.println("host: api.ipify.org");
    client.println();
  }
  else
  {
    terminal1.println("connect api.ipify.org failed");
    terminal1.println();
    terminal1.flush();
  }
  while(client.connected() && !client.available());
  while (client.connected() || client.available())
  {
    char c = client.read(); //gets byte ethernet buffer
    readstring += c; //places captured byte in readstring
  }
  client.stop(); //stop client
  newip = readstring.substring(153);
  serial.println(newip);
  serial.println();
  terminal1.println(newip);
  terminal1.println();
  terminal1.flush();
  readstring="";
}

author of code says works on mega

also, nice name!

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