Introduction

A module is a file containing one or more variable or function declarations, one or more function definitions, or similar items logically grouped together. Mixing modules written in C++ with modules written in C is relatively straightforward since C++ is essentially a superset of C. Mixing C++ modules with modules in languages other than C is more complicated.

When creating an executable file from a group of programs of mixed languages, one of them being C++, you need to be aware of the following:

In general, the overall control of the program must be written in C++. In other words, the main() function should appear in a C++ module.
You must pay attention to case-sensitivity conventions for function names in the different languages.
You must make sure that the data types in the different languages correspond. Do not mismatch data types for parameters and return values.
Storage layouts for aggregates differ between languages.
You must use the extern "C" linkage specification to declare any modules that are not written in C++; this is true whether or not the module is written in C.
You must use the extern "C" linkage specification to declare any modules that are written in C++ and called from other languages.




	NOTE: HP C++ classes are not accessible to non-C++ routines.

Introduction

Technical documentation

» Table of Contents

» Index