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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
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<statement sequence1>;# W1 O. t: t7 u+ f
elseif <condition> then5 o, b: F& {/ R8 O
<statement sequence2>;: p7 m3 @* G* m3 o% y
else
" r: c h8 `3 @2 A, y <statement sequence3>;# }$ H( w& z' A; s- x- z N8 h
end;
* ^- o/ g. V0 @) E+ s5 k. ]如果分支比较多，用：" Q/ V2 l' K& j" ^
inspect <expression>
2 T; e$ [ i4 g8 P when <constant_list> then
! J, n6 V1 ^, {' v( }& e8 H8 P1 ] <statement sequence1>;
* m, J1 \( p* p% g when <constant_list> then% P6 w2 t+ m; _
<statement sequence2>;: V2 q, m$ U6 L
...) H5 d$ `8 o( b- S
else M) w6 X. c+ Z0 Q
<statement sequence3>;7 j6 {1 F% |" {" R9 L
end;
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2循环语句
* p- v" l. J% `3 C0 c (1) from <statement sequence1>; o( g. h2 N! W1 L. Q
until <condition> loop8 s* w) Z3 j1 Q8 }6 I
<statement sequence2>;( e# N" l* o' p5 q! k" y$ L
end;! Z9 n3 A& G. B
(2) while <condition> loop
8 R F0 p5 a6 e6 Q) ^5 ^ <statement sequence1>;, v5 c: N, o, ~0 J8 p2 {2 _5 R+ }) f/ G q
end;
, ]0 o* f* R# Z- U! d3 Q! f (3) repeat 2 l+ i3 L6 w, g N ^$ j2 [
<statement sequence1>;+ h `" ^( O0 _2 C+ e4 t m3 K
until <condition>;. Z* s% @ n* K9 `7 F. q$ E* [
(4) for <condition> to <condition> loop
& W+ `4 Q1 S, Z <statement sequence1>;$ \ Q N9 ]% ~
next;7 o1 C% k: @1 C- ^' F, X
3中断语句$ Z9 `, M/ e1 g. k
waituntil <condition> prio <integer expression>;
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: A' c, Q$ r4 {. m, e以上为常用的函数！
1 ]. m- D8 k- L还有很多，如有需要我把资料发到你邮箱里
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