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发表于 2012-11-13 08:48:12
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1判断语句# s' Z) \8 ?; s# Z+ V& L" k( g
if <condition> then
, w$ g9 H6 `6 T# m <statement sequence1>;% V4 G" r$ ?9 @) H; m
elseif <condition> then) J* e" l9 P% i" n( C9 Y/ o
<statement sequence2>;
3 X* a2 `3 _5 [$ B else
6 l3 d9 |+ H" n$ F3 e <statement sequence3>;8 _% N' ~ j1 y6 v1 p
end;7 r* f% L: g! l3 T
如果分支比较多，用：
" T; M9 {0 P" R) C7 P inspect <expression>& T$ O1 Z6 P! J4 V: V& f
when <constant_list> then
* z* l4 [4 x$ Y1 t" {8 t7 S* B$ O! g <statement sequence1>;/ |% l% S) k: M, Z+ N" ?% r( w
when <constant_list> then
' V2 Z/ |! S* m" r2 N) v [/ C <statement sequence2>;1 ~9 J: b r& V- N" C5 D
...$ U, y1 K- j6 B6 ]0 f
else
6 Z2 n G2 ^) n2 a <statement sequence3>;
Z9 P2 ]; ?' m( C! I6 ?& u0 dend;$ }: z/ W5 r- R+ |) n9 \
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2循环语句
( J( A6 W9 Z y* l2 u0 A' v (1) from <statement sequence1>& x. [1 w9 e& ]+ Q3 O# I" S' j
until <condition> loop! ] l% @' O& L; t2 Z6 @ y) Y, A
<statement sequence2>;
% i8 K% G8 h/ e+ e0 I end;
5 |" B$ [$ j1 Z, u, o* G& m (2) while <condition> loop
& w3 }# s& Z& w: P <statement sequence1>;' D3 l+ f' q. c
end;
0 X1 ]/ n, a3 g7 P- @" m% `5 G8 Y; K (3) repeat
! f9 R* \: p. y, F+ [9 Y P <statement sequence1>;3 @3 M/ `, B, B
until <condition>;
/ X! j& {0 u( T% J. ?7 X (4) for <condition> to <condition> loop0 W6 Q y+ S+ u" E& w6 @6 `& Z! `
<statement sequence1>;
1 q) v2 p& s) o! c& l r0 B next;
* y5 V, _- B" b9 U n3中断语句
! e+ `/ ^; x: A9 J waituntil <condition> prio <integer expression>;+ F h5 h- t' j! O" Y
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( K- s- c# |6 f! c以上为常用的函数！1 a: g8 y, t' p4 h6 W' k4 ~/ C
还有很多，如有需要我把资料发到你邮箱里
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