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- /*
- Turbo Prolog 2.0 Reference Guide Chapter 2, Example Program 1
-
- Copyright (c) 1986, 88 by Borland International, Inc
-
- */
- constants
- egagraphic = 1
- /* Note that ifdef must start in column 1; don't indent it. */
- ifdef egagraphic /* if egagrphic is defined, use this goal */
-
- goal
- graphics(5, 1, 1),
- write("\nEga Graphics"),
- readchar(_).
- /* Note that elsedef must also setart in column 1; don't indent it. */
- elsedef /* otherwise, use the next goal */
-
- goal
- graphics(1, 1, 3),
- write("\nCga Graphics"),
- readchar(_).
- /* Note that enddef must start in column 1 too; don't indent it */
-
- enddef