65 lines
1.7 KiB
C
65 lines
1.7 KiB
C
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/******************************************************************************
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*
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* GCI example .c file - argument passing
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*
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* Module %M% Version %I% Date %H%
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*
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* (c) Copyright 1998 Ardent Software Inc. - All Rights Reserved
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* This is unpublished proprietary source code of Ardent Software Inc.
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* The copyright notice above does not evidence any actual or intended
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* publication of such source code.
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*
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*******************************************************************************
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*
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* Maintenence log - insert most recent change descriptions at top
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*
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* Date.... GTAR# WHO Description.........................................
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* 10/14/98 23801 SAP Change copyrights.
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* 05/23/90 6933 DTW move include stuff
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* 02/19/90 -- DTW New file
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*
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******************************************************************************/
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#include <gci.h>
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/*
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* a subroutine to demonstrate data passing both ways
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* (BASIC to C and back, C to BASIC).
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*
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* arguments: arg1 = pointer to character string pointer
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* arg2 = pointer to an integer
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* return value: void
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* See the GCI manual for more information.
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*/
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void
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passing(arg1, arg2)
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char **arg1;
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int *arg2;
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{
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/*
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* display what we got
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*/
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printf("This is inside the C routine.\n");
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printf("arg1 is a string equal to '%s'.\n", *arg1);
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printf("arg2 is an integer equal to '%d'.\n", *arg2);
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/*
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* change what we got for demonstration porpoises only
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*/
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(void)strncpy(*arg1, "after passing", strlen(*arg1));
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*arg2 = -999;
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/*
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* display what we changed
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*/
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printf("\n");
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printf("The C routine has changed arg1 to '%s'\n", *arg1);
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printf("and changed arg2 to '%d'.\n", *arg2);
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/*
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* bring it all home
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*/
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printf("Now let's return to BASIC.\n");
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return;
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}
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