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Text File  |  1980-01-03  |  8KB  |  128 lines
  1.                           Å É ê ï Ä å à ì ê à   2
  2.  
  3.                   ìÇùÇïÄ / èÄìàû öÇëïÇ ê ôæïÄéꃠöêï£ÆÉÇ
  4.  
  5.       ìàêìäàèæì¢à öÇëï¢
  6.  
  7.       ä½∩  óßÑσ  ¡Ñ¿¡ñѬߡδσ  Σá⌐½«ó  ßπΘÑßΓóπεΓ  ß½ÑñπεΘ¿Ñ   πß½«ó¿∩   »α¿
  8. óδ»«½¡Ñ¡¿¿  π¬áºá¡¡«⌐  »«ß½Ññ«óáΓѽ∞¡«ßΓ¿  ¬«¼á¡ñ.  ç¡áτÑ¡¿∩ RECNO () αáó¡«
  9. ¡«¼Ñαπ ºá»¿ß¿ ó ñá¡¡«⌐ »«º¿µ¿¿.
  10.  
  11. +-----------------------+----------------+----------+----------+---------+
  12. |   è«¼á¡ñá             |     RECNO()    |   EOF()  |   BOF()  | ÄΦ¿í¬á* |
  13. +-----------------------+----------------+---------+----------+----------+
  14. |GO TOP                 |       1        |    .F.   |    .F.   |   .N.   |
  15. |GO TOP; SKIP-n         |       1        |    .F.   |    .T.   |   .N.   |
  16. |GO TOP; SKIP-n; SKIP m |      m+1       |    .F.   |    .F.   |   .N.   |
  17. |GO TOP; SKIP-n; SKIP-m |       1        |    .F.   |    .T.   |   .Y.   |
  18. |GO BOTTOM              |   »«ß½Ññ¡∩∩    |    .F.   |    .F.   |   .N.   |
  19. |GO BOTTOM; SKIP n      |  »«ß½Ññ¡∩∩+1   |    .T.   |    .F.   |   .N.   |
  20. |GO BOTTOM;SKIP n;SKIP-m|(»«ß½Ññ¡∩∩+1)-m |    .F.   |    .F.   |   .N.   |
  21. |GO BOTTOM;SKIP n;SKIP m|  »«ß½Ññ¡∩∩+1   |    .T.   |    .F.   |   .Y.   |
  22. |LIST                   |  »«ß½Ññ¡∩∩+1   |    .T.   |    .F.   |   .N.   |
  23. |LOCATE (found)         |      n         |    .F.   |    .F.   |   .N.   |
  24. |LOCATE (not found)     |  »«ß½Ññ¡∩∩+1   |    .T.   |    .F.   |   .N.   |
  25. +-----------------------+----------------+----------+----------+---------+
  26. |æ««íΘÑ¡¿∩ «í «Φ¿í¬áσ "ìáτὫ Σá⌐½á" ¿ "諡ѵ Σá⌐½á" úÑ¡Ñα¿απεΓß∩, Ñß½¿  |
  27. |πß½«ó¿Ñ πªÑ ¿ßΓ¿¡¡« ñ« óδ»«½¡Ñ¡¿∩ ¬«¼á¡ñδ.                              |
  28. |                                                                        |
  29. |潫ó« "»«ß½Ññ¡∩∩" «Γ¡«ß¿Γß∩ ¬ ¡«¼Ñαπ »«ß½Ññ¡Ñ⌐ ºá»¿ß¿ ó íáºÑ ñá¡¡δσ. ïε-|
  30. |íá∩ »«»δΓ¬á »ÑαÑ⌐Γ¿  ºá φΓπ ºá»¿ß∞ ñѽáÑΓ º¡áτÑ¡¿∩ RECNO() αáó¡δ¼ «íΘÑ- |
  31. |¼π τ¿ß½π ºá»¿ßÑ⌐ »½εß 1, úñÑ m ¿ n - »«½«ª¿Γѽ∞¡δÑ µÑ½δÑ τ¿ß½á.         |
  32. |                                                                        |
  33. |éßÑ ¬«¼á¡ñδ, ¬«Γ«αδÑ ¡Ñ óδºδóáεΓ ¿º¼Ñ¡Ñ¡¿∩ »«½«ªÑ¡¿∩ ó íáºÑ, ¡Ñ ñÑ⌐ßΓóπ-|
  34. |εΓ, Ñß½¿ EOF() ¿ßΓ¿¡¡«.                                                 |
  35. +------------------------------------------------------------------------+
  36.  
  37.  
  38.       êìäàèæì¢à öÇëï¢
  39.  
  40.       ä½∩ óßÑσ ¿¡ñѬߡδσ Σá⌐½«ó ßπΘÑßΓóπεΓ ß½ÑñπεΘ¿Ñ πß½«ó¿∩ »α¿ óδ»«½¡Ñ¡¿¿
  41. π¬áºá¡¡δ󠬫¼á¡ñ. ç¡áτÑ¡¿∩ RECNO () αáó¡« ¡«¼Ñαπ ºá»¿ß¿ ó ñá¡¡«⌐ »«º¿µ¿¿.
  42.  
  43. +-----------------------+----------------+----------+----------+---------+
  44. |   è«¼á¡ñá             |     RECNO()    |   EOF()  |   BOF()  | ÄΦ¿í¬á* |
  45. +-----------------------+----------------+----------+----------+---------+
  46. |GO TOP                 |    »Ñαóá∩      |    .F.   |    .F.   |   .N.   |
  47. |GO TOP; SKIP-n         |    »Ñαóá∩      |    .F.   |    .T.   |   .N.   |
  48. |GO TOP; SKIP-n; SKIP m |   »Ñαóá∩+m     |    .F.   |    .F.   |   .N.   |
  49. |GO TOP; SKIP-n; SKIP-m |    »Ñαóá∩      |    .F.   |    .T.   |   .Y.   |
  50. |GO BOTTOM              |   »«ß½Ññ¡∩∩    |    .F.   |    .F.   |   .N.   |
  51. |GO BOTTOM; SKIP n      |  »«ß½Ññ¡∩∩+1   |    .T.   |    .F.   |   .N.   |
  52. |GO BOTTOM;SKIP n;SKIP-m|(»«ß½Ññ¡∩∩+1)-m |    .F.   |    .F.   |   .N.   |
  53. |GO BOTTOM;SKIP n;SKIP m|  »«ß½Ññ¡∩∩+1   |    .T.   |    .F.   |   .Y.   |
  54. |LIST                   |  »«ß½Ññ¡∩∩+1   |    .T.   |    .F.   |   .N.   |
  55. |LOCATE (¡á⌐ñÑ¡á)       |      n         |    .F.   |    .F.   |   .N.   |
  56. |LOCATE (¡Ñ ¡á⌐ñÑ¡á)    |  »«ß½Ññ¡∩∩+1   |    .T.   |    .F.   |   .N.   |
  57. |FIND (¡á⌐ñÑ¡á)         |      n         |    .F.   |    .F.   |   .N.   |
  58. |FIND (¡Ñ ¡á⌐ñÑ¡á)      |  »«ß½Ññ¡∩∩+1   |    .T.   |    .F.   |   .N.   |
  59. |SEEK (¡á⌐ñÑ¡á)         |      n         |    .F.   |    .N.   |   .N.   |
  60. |SEEK (¡Ñ ¡á⌐ñÑ¡á)      |  »«ß½Ññ¡∩∩+1   |    .T.   |    .F.   |   .N.   |
  61. +-----------------------+----------------+----------+----------+---------+
  62. |æ««íΘÑ¡¿∩ «í «Φ¿í¬áσ "ìáτὫ Σá⌐½á" ¿ "諡ѵ Σá⌐½á" úÑ¡Ñα¿απεΓß∩, Ñß½¿  |
  63. |πß½«ó¿Ñ πªÑ ¿ßΓ¿¡¡« ñ« óδ»«½¡Ñ¡¿∩ ¬«¼á¡ñδ.                              |
  64. |                                                                        |
  65. |潫ó« "»«ß½Ññ¡∩∩" «Γ¡«ß¿Γß∩ ¬ »«½«ªÑ¡¿ε »«ß½Ññ¡Ñ⌐ ºá»¿ß¿ ó ¿¡ñѬßÑ.  ïε-|
  66. |íá∩ »«»δΓ¬á »ÑαÑ⌐Γ¿  ºá φΓπ ºá»¿ß∞ ñѽáÑΓ º¡áτÑ¡¿∩ RECNO() αáó¡δ¼ «íΘÑ- |
  67. |¼π τ¿ß½π ºá»¿ßÑ⌐ + 1.                                                   |
  68. |                                                                        |
  69. |éßÑ ¬«¼á¡ñδ, ¬«Γ«αδÑ ¡Ñ óδºδóáεΓ ¿º¼Ñ¡Ñ¡¿∩ »«½«ªÑ¡¿∩ ó íáºÑ, ¡Ñ ñÑ⌐ßΓóπ-|
  70. |εΓ, Ñß½¿ EOF() ¿ßΓ¿¡¡«.                                                 |
  71. +------------------------------------------------------------------------+
  72.  
  73.  
  74.       ôæïÄéꃠöêï£ÆÉÇ
  75.  
  76.       é ß½ÑñπεΘÑ⌐ Γáí½¿µÑ «»¿ßá¡« ó½¿∩¡¿Ñ ¬«¼á¡ñ SET DELETED ¿  SET  FILTER
  77. ¡á ºá»¿ß¿, «íαáíáΓδóáѼδÑ ¬«¼á¡ñἿ ß¿ßΓѼδ Éàüôæ.
  78.  
  79.  +-----------------------------------------------------------------------+
  80.  |    è«¼á¡ñá           | SET DELETED OFF |       SET DELETED ON         |
  81.  |                      |    NO FILTER    |         FILTER ON            |
  82.  +----------------------+-----------------+------------------------------+
  83.  |GO TOP                |ï«ú¿τÑ߬á∩ »Ñαóá∩|ï«ú¿τÑ߬á∩ »Ñαóá∩ á¬Γ¿ó¡á∩ ºá-|
  84.  |                      |ºá»¿ß∞           |»¿ß∞. àß½¿ ¡ÑΓ á¬Γ¿ó¡δσ ºá»¿- |
  85.  |                      |                 |ßÑ⌐, EOF()- ¿ßΓ¿¡¡«.          |
  86.  |GO BOTTOM             |ï«ú¿τÑ߬á∩ »«ß½Ñ-|ï«ú¿τÑ߬á∩ »«ß½Ññ¡∩∩ á¬Γ¿ó¡á∩ |
  87.  |                      |ñ¡∩∩ ºá»¿ß∞      |ºá»¿ß∞. àß½¿ ¡ÑΓ á¬Γ¿ó¡δσ ºá- |
  88.  |                      |                 |»¿ßÑ⌐, ¿ßΓ¿¡¡δ º¡áτÑ¡¿∩ BOF() |
  89.  |                      |                 |¿ EOF().                      |
  90.  |GOTO                  |ô¬áºá¡¡á∩ ºá»¿ß∞.|ô¬áºá¡¡á∩ ºá»¿ß∞.             |
  91.  |                      |                 |                              |
  92.  |SKIP                  |ÆѬπΘá∩ ºá»¿ß∞+/-|ÆѬπΘá∩ ºá»¿ß∞ +/- π¬áºá¡¡«Ñ  |
  93.  |                      |π¬áºá¡¡«Ñ ¬«½¿τÑ-|¬«½¿τÑßΓó« á¬Γ¿ó¡δσ ºá»¿ßÑ⌐.  |
  94.  |                      |ßΓó«. BOF() ¿ EOF|BOF() ¿ EOF() íπñπΓ πßΓá¡«ó½Ñ-|
  95.  |                      |() íπñπΓ πßΓá¡«ó-|¡δ ß««ΓóÑΓßΓóÑ¡¡«.            |
  96.  |                      |½Ñ¡δ ß««ΓóÑΓßΓóÑ-|                              |
  97.  |                      |¡«.              |                              |
  98.  |                      |                 |                              |
  99.  |FIND                  |ÅÑαó«Ñ »«∩ó½Ñ¡¿Ñ |ÅÑαó«Ñ »«∩ó½Ñ¡¿Ñ  π¬áºá¡¡«ú«  |
  100.  |SEEK                  |π¬áºá¡¡«ú« πß½«- |πß½«ó¿∩ ó á¬Γ¿ó¡«⌐ ºá»¿ß¿.    |
  101.  |LOCATE                |ó¿∩. EOF() íπñÑΓ |EOF() íπñÑΓ ¿ßΓ¿¡¡«, Ñß½¿ ¡Ñ  |
  102.  |                      |¿ßΓ¿¡¡«, Ñß½¿ ¡Ñ |¡á⌐ñÑ¡« ¡¿ «ñ¡«⌐ ¿  ó  LOCATE |
  103.  |                      |¡á⌐ñÑ¡« ¡¿ «ñ¡«⌐ |π¬áºá¡« ALL.                  |
  104.  |                      |¿ ó LOCATE π¬áºá-|                              |
  105.  |                      |¡« ALL.          |                              |
  106.  |                      |                 |                              |
  107.  |DELETE                |æΓÑαÑΓ∞ π¬áºá¡¡δÑ|æΓÑαÑΓ∞ π¬áºá¡¡δÑ á¬Γ¿ó¡δÑ ºá-|
  108.  |                      |ºá»¿ß¿, óßΓáΓ∞ ¡á|»¿ß¿, óßΓáΓ∞ ¡á »«ß½Ññ¡Ñ⌐ πñá-|
  109.  |                      |»«ß½Ññ¡Ñ⌐ πñá½Ñ¡-|½Ñ¡¡«⌐ ºá»¿ß¿.                |
  110.  |                      |¡«⌐ ºá»¿ß¿.      |                              |
  111.  |                      |                 |                              |
  112.  |COPY                  |Äíαáí«ΓáΓ∞  óßÑ  |Äíαáí«ΓáΓ∞  á¬Γ¿ó¡δÑ  ºá»¿ß¿  |
  113.  |COUNT                 |ºá»¿ß¿ ó π¬áºá¡- |ó π¬áºá¡«¼ ¬«½¿τÑßΓóÑ ¿½¿ ñ«  |
  114.  |EDIT                  |¡«¼  ¬«½¿τÑßΓóÑ  |»«∩ó½Ñ¡¿∩  ¿ßΓ¿¡¡«ú«  πß½«ó¿∩ |
  115.  |LIST                  |¿½¿ ñ« ó«º¡¿¬¡«- |EOF(). é¬½ετá∩ ΓѬπΘπε ºá»¿ß∞ |
  116.  |RECALL                |óÑ¡¿∩ ¿ßΓ¿¡¡«ú«  |(á¬Γ¿ó¡á ¿½¿ ¡ÑΓ), Ñß½¿ π¬áºá-|
  117.  |REPLACE               |πß½«ó¿∩ EOF().   |¡¡« NEXT n ¿½¿ REST.          |
  118.  |SORT                  |                 |                              |
  119.  |SUM                   |                 |                              |
  120.  |                      |                 |                              |
  121.  |INDEX                 |鬽ετáÑΓ óßÑ ºá- |鬽ετáÑΓ óßÑ ºá»¿ß¿           |
  122.  |REINDEX               |»¿ß¿             |                              |
  123.  +----------------------+-----------------+------------------------------+
  124.  |Åα¿¼Ñτá¡¿Ñ: Ç¬Γ¿ó¡«⌐ τ¿ΓáÑΓß∩ ºá»¿ß∞, ¬«Γ«αá∩ ¡Ñ «Γíα«ΦÑ¡á  »«  πß½«ó¿ε|
  125.  |ó SET FILTER ¿½¿ ¬«Γ«αá∩ ¡Ñ »«¼ÑτÑ¡á ñ½∩ πñá½Ñ¡¿∩.                     |
  126.  +-----------------------------------------------------------------------+
  127.  
  128.