Calling a FORTRAN subroutine from C

Question

I am trying to call a FORTRAN function from C

My questions are:

1. If fortRoutine is the name of my fortran subroutine, then I am calling

Answer 1

The answer depends upon the compiler and the system (technically, its ABI). For GCC (which is a C, a C++, an Ada, and a Fortran compiler) read the fortran mixed programming chapter.