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'This example uses the SSEGADD function to obtain the BASIC string address of
'a string used by a C procedure. The BASIC program calls the printmessage C
'procedure which, in turn, calls BASIC to obtain the string address.
 
'Note: To run this program, you must first compile the C procedure (shown
'below in remarks) and incorporate it in a Quick library or link it to the
'compiled BASIC program.
 
DEFINT A-Z
DECLARE SUB printmessage CDECL (BYVAL farstring AS LONG)
'Create the message as an ASCIIZ string, as required by the C printf
'function.
a$ = "This is a short example of a message" + CHR$(0)
'Call the C procedure with pointers.
CALL printmessage(SSEGADD(a$))
 
 
'/* C Routine printmessage */
'/* Prints a BASIC far string on the screen.*/
'
'#include <stdio.h>
'
'/* Define a procedure which inputs a string far pointer */
'void  printmessage (char far *farpointer)
'   {
'   /* print the string addressed by the far pointer */
'   printf( "%s\n", farpointer);
'   }
'