F77/C++

I read this paper:
http://www.uop.edu.jo/download/PdfCourses/Cplus/cppf77.pdf

And it was published TIME ago, so i was wondering, is there any point in using FORTRAN for the complex math in a program? (for example in a physics engine or a graphics modeller)

Opinions please chaps, and anyone mixed anything else with C++?

>>2
If it's possible in C, isn't it equally as possible in C++? I thought C++ was an extention of the C language (adding classes etc)

Spoiler: I am a D programmer and have only dabled in C/C++