title: How can I create a google proto message file from C++ program?
body: <p>I have an input file in xml which I have parsed and filled in my data structures using C++.</p>
  
  <p>I am new to google protocol buffer, and I am not able to figure out how can I create a message (.prot) file from my filled in data structures. </p>
  
  <p>Thanks</p>