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发表于 2012-11-13 08:48:12
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显示全部楼层
1判断语句
7 h- p1 q# ?1 I$ {8 B* y7 x6 \ if <condition> then
8 {3 v u4 x- F6 S <statement sequence1>;" \2 y# J8 ^7 v# }+ S
elseif <condition> then
7 e, O: h$ e3 Z8 ?, U6 R <statement sequence2>;& L m1 J M" q3 W+ E
else & m0 K3 J. T' O# d) m7 X8 F
<statement sequence3>;+ }! u* k: O; v' s! ^
end;
; J8 M" P' L7 g0 @& j# m _如果分支比较多,用:
7 y9 a* I3 o2 F inspect <expression>- l9 C: h' S! t. f+ J& Z: m7 j
when <constant_list> then
0 O, d* @- O5 o. t <statement sequence1>;
1 Y5 X/ A1 l* l6 d when <constant_list> then
# S6 w; {% j! n) p; c <statement sequence2>;2 l. E8 R9 B9 V
...
* {$ y/ g7 v4 l0 x2 e2 W* K7 y else
3 ]$ W! x- C m0 P <statement sequence3>; l- \* I% ^# s1 [/ E
end;3 F. K, J2 A0 E* n
$ G. U' k5 D7 M! _$ Y2循环语句5 j' h% o5 t- a# l8 F$ k! V
(1) from <statement sequence1>
. y" K l# M4 ]* Y* m* g& p until <condition> loop
# W$ b$ j' b. {1 j& N <statement sequence2>;( |7 i& C: m l# H3 G
end;
8 o3 c% k/ ?9 O# ~" R; ^ (2) while <condition> loop1 g$ [! c, Z4 ]
<statement sequence1>;" s! j# @6 v$ [: g
end;
' S+ t& y# U S (3) repeat # i/ b" _* m* m1 I3 w
<statement sequence1>;
0 @4 w8 T1 U }# {* [# W+ r1 R until <condition>;/ i- q Y6 {4 Z8 \ R9 S% |
(4) for <condition> to <condition> loop; B6 K: {) L6 r5 S; r
<statement sequence1>;
& V( O1 n: T9 r$ _ G+ { next; L% b6 f8 d7 a4 v- |
3中断语句, _, M2 z7 W2 P! v! L& O8 g8 C
waituntil <condition> prio <integer expression>;% T/ J2 D% I) ?3 m* g
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以上为常用的函数!, v: g3 a; N t- R9 P
还有很多,如有需要我把资料发到你邮箱里
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