title: Conversion of Fortran 77 code to C++
body: <p>Has anyone converted a large (ours is 550,000 lines) program of Fortran 77 code to C++ ?  What pitfalls did you run into ?  Was the conversion a success ?  Did you use a tool like <code>for_c</code> ( <a href="http://www.cobalt-blue.com/fc/fcmain.htm" rel="noreferrer">http://www.cobalt-blue.com/fc/fcmain.htm</a> ) ?  Was the resulting C++ code significantly faster or slower ?</p>