获取部件中所有的表达式，并对表达式进行更改，更新模型

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获取部件中所有的表达式，并对表达式进行更改，更新模型
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5 [  H/ G$ e3 h9 S7 G9 ]结果：

Before change the value :
p0=20
2 ]! t/ X  ~' L* J/ C, A9 D) ]: xp1=h
" i& r+ M3 R0 M: a3 ]w=100
h=20
) t) f8 t% d* R) U- nl=200
6 o4 s3 w$ n. A8 t* MStart to change the expressions :
) h1 w& w7 d/ [* r$ \" P- Yp0=20
p1=h
3 o; b- B, ]: G, ]& i( |& \w=100
" X: C) u6 ]4 b  K$ m2 m: ?( l* U! sh=20
8 a# Q, K$ h' U8 p/ }l=200

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1. <p>
   % ^& V& R8 s4 Q: u! k9 t8 j1 L
2. static void do_UGopen_api(void)
   
3. {
   
4. // create block 1
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5. double coner[3] = {0,0,0};
   
6. char *edges[3] = {"l=100","w=100","h=20"};
   
7. tag_t blk_tag;
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8. UF_MODL_create_block1(UF_NULLSIGN,coner,edges,&blk_tag);
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9. // create a hole
   
10. double dir[3] = {0,0,1};
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11. double coner1[3] = {50,50,0};
    
12. tag_t cyl_tag;
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13. UF_MODL_create_cyl1(UF_NEGATIVE,coner1,"h","20",dir,&cyl_tag);</p><p> // get the expressions
    
14. tag_t part=UF_PART_ask_display_part();
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15. int number_of_exps = 0;
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16. tag_t *exps;
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17. char *str;
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18. char expStr[133];
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19. UF_UI_open_listing_window();
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20. UF_MODL_ask_exps_of_part(part,&number_of_exps,&exps);
    
21. UF_UI_write_listing_window("Before change the value : \n");
    
22. for(int i = 0 ; i < number_of_exps;i++)
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23. {
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24.       
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25.    UF_MODL_ask_exp_tag_string(exps[i],&str);
    
26.    UF_UI_write_listing_window(str);
    
27.    UF_UI_write_listing_window("\n");
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28.    UF_free(str);
    
29. }
    
30. 
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31. UF_free(exps);
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32. //Start to change the expressions
    
33. UF_UI_write_listing_window("Start to change the expressions : \n");
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34. char *exp_str = "l = 200";
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35. UF_MODL_edit_exp(exp_str);
    
36. UF_MODL_update();
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37. exp_str = "\0";
    # b4 O# l3 p- h8 n9 s
38. //get the new exps
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39. UF_MODL_ask_exps_of_part(part,&number_of_exps,&exps);
    
40. for(int i = 0 ; i < number_of_exps;i++)
    
41. {
    
42.    UF_MODL_ask_exp_tag_string(exps[i],&str);
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43.    UF_UI_write_listing_window(str);
    
44.    UF_UI_write_listing_window("\n");
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45.    UF_free(str);
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46. }
    
47. UF_free(exps);
    
48. }</p><p> </p>

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