With VisualAge C++, you can call functions written in other XL languages from your C and C++ programs. Similarly, the other XL language programs can call functions written in VisualAge C++. You should already be familar with the syntax of the languages you are using.
Interlanguage Calling Conventions
Corresponding Data Types
Use the Subroutine Linkage Conventions in Interlanguage Calls
Sample Program: C Calling Fortran