Provides information on C++ mixed-language calling conventions. 

This section describes C++ mixed-language calling conventions. 

You can call routines written in other languages, and vice versa. When you mix languages, you have to deal with two important issues: identifiers and parameter passing. 

By default, the compiler saves all global identifiers in their original case (lower, upper, or mixed) with an underscore "_" prepended to the front of the identifier. To remove the default, you can use the -u command-line option.