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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
. H8 z6 @+ J3 v6 n3 B. R& i7 y$ t if <condition> then
9 u* w4 K6 c4 ]5 C <statement sequence1>;5 c. E+ N8 O, Z8 L) V, o
elseif <condition> then. Y$ H% _. ] S- R$ x
<statement sequence2>;
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<statement sequence3>;2 U5 ~% y4 l( N8 ]) ~
end;
6 ^5 B, y, W# X5 k& o6 A如果分支比较多，用：
2 U; a* `7 K5 d( y inspect <expression>
/ U$ c/ P& K+ D3 l* n when <constant_list> then
! t% Q2 T/ H! j, z2 N, [ <statement sequence1>;# X0 M* [# X: ]( T. i3 t6 h
when <constant_list> then' d/ D# s& V4 \5 j
<statement sequence2>;
- A9 D1 L5 v* K( }2 |) C ...
3 j% `5 `1 B* l5 @7 { else
$ f6 {1 J! E( r @- s2 | <statement sequence3>;
$ C# K/ ~2 A2 ^5 J2 {" N* Wend;
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2循环语句
: N, ]" O9 v1 E) f7 m1 i! Z (1) from <statement sequence1>
( h2 W4 j- R+ g, U; o until <condition> loop
! v9 n- @$ V( _2 s <statement sequence2>;4 x" S3 L2 c$ T3 m; |
end;; Q. [# X$ `; W0 ]# D1 Q7 ^6 a& C
(2) while <condition> loop2 m3 s; @4 T# c' p$ p+ S: r
<statement sequence1>;3 q/ |: F# ?; k
end;% @& n: t5 v: J V
(3) repeat
( q7 O6 z" L+ ^' B! E" T. B; v/ K <statement sequence1>;4 S: u8 i: `- e, @( q7 y3 x4 D
until <condition>;) d% d, g( I. D
(4) for <condition> to <condition> loop+ X* l# R/ Y8 a6 U: O$ F/ f! [4 o/ v
<statement sequence1>;: V( [- q) ^& s8 B$ v
next;# G8 W, }1 F. R5 a
3中断语句; F9 k- f) i) j0 s7 Z3 Z5 f
waituntil <condition> prio <integer expression>;
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! Q! G, M* q1 P以上为常用的函数！
. L" b4 R! k! M' R* M2 u7 r$ _还有很多，如有需要我把资料发到你邮箱里
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