B4




     1
2
4



        ,

5




            3
4
5
6
--

     --

 =


          7
(       /   )



A.attr1 , A.attr2
        ,   ,




                        8
9
10
11
12
13
?(   )


         14
15
→   →




        16
17
18
19
20
21
22
23
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Compilers01

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Compilers01

  1. 1. B4 1
  2. 2. 2
  3. 3. 4 , 5 3
  4. 4. 4
  5. 5. 5
  6. 6. 6
  7. 7. -- -- = 7
  8. 8. ( / ) A.attr1 , A.attr2 , , 8
  9. 9. 9
  10. 10. 10
  11. 11. 11
  12. 12. 12
  13. 13. 13
  14. 14. ?( ) 14
  15. 15. 15
  16. 16. → → 16
  17. 17. 17
  18. 18. 18
  19. 19. 19
  20. 20. 20
  21. 21. 21
  22. 22. 22
  23. 23. 23

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