Conversion of Fortran 77 code to C++

Question

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 too

Answer 1

I once used this: http://manpages.ubuntu.com/manpages/hardy/man1/f2c.html to convert a small fortran program to C. The conversion was successful. The code wasn't significantly complex to detect any kind of speed change.

Since your program is allot bigger I don't really know if everything is going to run like it did with me.