This example shows a simple program in C that calls Modula-2 procedures.
Special attention has to be given to the following points:
- Modula-2 handles only far code and far data. Use the 'far' keyword in
C for all data and procedures handled also in Modula-2, or compile with
the C compiler option /AL to use the large memory model.
- C doesn't provide real string variables. Strings are handled with
pointers to an array of characters. Use pointers also in Modula-2
or use the knowledge about the implementation and pass the string
length along with the pointer.
- The bodies of the Modula-2 modules will only be executed at the beginning
of the first call to a Modula-2 procedure. Avoid using any module bodies.
If you do, be aware that the initialization of the module won't occur
before the first call.
- The program must exit by calling the function "m2exit()". This function
will properly exit the program by executing the Modula-2 library and
RTS termination procedures.
The function prototype for this function is available in the C include
file "rtsm2exi.h". You should "#include" this file at the beginning
of any C modules that need to call the "m2exit()" function.
