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发表于 2012-11-13 08:48:12
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1判断语句
% S& H( k6 {5 h4 [+ Z; u$ a( C if <condition> then
$ q7 O: J- l5 ^' g; H# D <statement sequence1>;7 p% `3 Y' ?$ R6 b! R4 k1 V* w
elseif <condition> then( T) t4 e# O5 v6 a, A8 n& t
<statement sequence2>;+ X) b: Q/ H. R# `9 g4 g
else
; Q# i r* @! }' f! o+ `' o <statement sequence3>;
/ B! ^( N8 S$ I* I end;
' v* v% H5 n( _. g+ T x3 a& p如果分支比较多，用：
0 W+ @' m% O& d) ~# e+ w* J: P inspect <expression>
* h4 f7 g9 `5 j, E! S3 X* G' x1 I when <constant_list> then. W7 U8 K0 t7 P6 V; u2 C
<statement sequence1>;9 {' S) s7 N' e
when <constant_list> then
- `$ B. ^2 K) z0 e# }5 X" r <statement sequence2>;# A# x' k) Y3 _2 W0 z
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else0 `" H/ y1 {6 S0 s# r( c
<statement sequence3>;
9 E. t9 N* Q& g( v/ h" uend;' s h5 \ w5 R$ b1 C% X) P: `
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2循环语句) o; X* _2 B& @! e
(1) from <statement sequence1>% C; i& g Z5 N, S4 `1 ^
until <condition> loop
5 c; k( _. {' A: ] <statement sequence2>;# ~& H' W% g0 p
end;
( {3 v( `2 Y- A1 p: c9 w' D (2) while <condition> loop
7 X* g) U S; J& Y2 j <statement sequence1>;7 o9 {' W( C$ D' C7 H
end;) \" z' H& ^" l1 k9 F1 U
(3) repeat
/ V& m' z2 K% B: p g <statement sequence1>;
6 p" F' A9 c' v: u7 o( q! t until <condition>;% G/ Q5 T$ [6 O5 o- r! s+ \
(4) for <condition> to <condition> loop
. e5 n) Y$ {. l' K b# r <statement sequence1>;* d( ~& Q. C# O$ _1 C s( r3 D1 o
next;
2 k8 V4 o; v( V1 `3中断语句3 {9 R! y# u% Q/ Q
waituntil <condition> prio <integer expression>;5 o3 k8 [& _5 Q0 U7 W' b1 o
! i+ i0 {6 x% A* }
k/ l& G1 _5 y. i* Z; [* S* ^以上为常用的函数！+ u+ R) j; a. o
还有很多，如有需要我把资料发到你邮箱里 3 E0 C7 m' ]- h2 l
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