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/ C/C++ Users Group Library 1996 July / C-C++ Users Group Library July 1996.iso / vol_200 / 280_01 / xindex.c < prev   
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C/C++ Source or Header  |  1989-01-11  |  1.3 KB  |  46 lines
  1. /* [xindex.c of JUGPDS Vol.17] */
  2. /*
  3. *****************************************************************
  4. *                                *
  5. *    Written by  Hakuo Katayose (JUG-CP/M No.179)        *
  6. *            49-114 Kawauchi-Sanjuunin-machi        *
  7. *            Sendai, Miyagi 980                          *
  8. *            Phone: 0222-61-3219                *
  9. *                                *
  10. *       Modifird by Toshiya Oota   (JUG-CPM No.10)              *
  11. *                   Sakae ko-po 205                 *
  12. *            5-19-6 Hosoda                *
  13. *            Katusikaku Tokyo 124            *
  14. *                                *
  15. *        for MS-DOS Lattice C V3.1J & 80186/V20/V30    *
  16. *                                *
  17. *    Compiler Option: -ccu -k0(1) -ms -n -v -w        *
  18. *                                *
  19. *    Edited & tested by Y. Monma (JUG-CP/M Disk Editor)    *
  20. *            &  T. Ota   (JUG-CP/M Sub Disk Editor)    *
  21. *                                *
  22. *****************************************************************
  23. */
  24.  
  25. /* Library functions for Software Tools */
  26.  
  27. #include "stdio.h"
  28. #include "dos.h"
  29. #include "ctype.h"
  30. #include "tools.h"
  31.  
  32. /* xindex - invert condition returned by index */
  33. int  xindex(array, c, allbut, lastto)
  34. char    array[];
  35. int    c, allbut, lastto;
  36.  
  37. {
  38.     if (c == EOF)
  39.         return(ERROR);
  40.     else if (allbut == NO)
  41.         return(cindex(array,c));
  42.     else if (cindex(array,c) >= 0)
  43.         return(ERROR);
  44.     return(++lastto);
  45. }
  46.