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BASIC Source File  |  1993-01-01  |  676 b   |  21 lines
  1. '   +----------------------------------------------------------------------+
  2. '   |                                                                      |
  3. '   |        PBClone  Copyright (c) 1990-1993  Thomas G. Hanlin III        |
  4. '   |                                                                      |
  5. '   +----------------------------------------------------------------------+
  6.  
  7.    DECLARE SUB Reverse (St$)
  8.  
  9. SUB RInstr (MainSt$, SubSt$, Posn%)
  10.    Main$ = MainSt$
  11.    Sub$ = SubSt$
  12.    Reverse Main$
  13.    Reverse Sub$
  14.    Tmp% = INSTR(Main$, Sub$)
  15.    IF Tmp% THEN
  16.       Posn% = LEN(Main$) - LEN(Sub$) - Tmp% + 2
  17.    ELSE
  18.       Posn% = 0
  19.    END IF
  20. END SUB
  21.