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发表于 2012-11-13 08:48:12
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1判断语句& T& e' a0 G- w* { b; V2 D- U
if <condition> then0 S. [, u# A6 r* w# S/ _$ i' v
<statement sequence1>;' ~" ?/ d3 X' P- K3 _
elseif <condition> then
/ J+ I6 F8 `4 v9 t <statement sequence2>; i6 R9 X( A8 F9 h5 h, K
else
% {( K, |- l8 f$ {9 e- H7 H <statement sequence3>;
5 D8 P$ E3 D3 h5 @6 L8 P$ b" q end;
2 r- Q4 {# [3 C如果分支比较多，用：
7 a6 m6 M/ R6 r8 B% t; Z+ E inspect <expression>
% {' r% [ ^; g* h when <constant_list> then
: A0 x: F0 |! A5 p$ k, K, Q <statement sequence1>;
4 n6 w' w: ?& }9 `$ V9 x when <constant_list> then' g/ H; K" i% w! }
<statement sequence2>;
, b& q8 w, h1 D; T& X8 r/ V ...
) u7 V0 d6 r5 W4 R/ z else
" t! U5 ~! q) k <statement sequence3>;
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2循环语句
& n$ g4 w1 H3 N7 @ (1) from <statement sequence1>4 @* T" O2 D* {7 W: o
until <condition> loop6 S2 t9 A0 a2 {/ b
<statement sequence2>;
6 j$ M ~, [" a4 |9 C6 O end;
4 {' F6 \1 v4 G ?; E0 G) |8 Z K" @ (2) while <condition> loop2 N d: ]% L& T/ |
<statement sequence1>;
6 i5 b- H. {" ]) X end;
2 w" [# c. f, f5 S2 k$ q4 m (3) repeat 9 W! m" V. s# d( h* I+ a7 c
<statement sequence1>; t; C/ O, L5 M
until <condition>;% i& ?4 G. H# G1 {+ R, _8 {
(4) for <condition> to <condition> loop
4 n% K! X9 p% L0 I <statement sequence1>;; Y U, D" _2 u" R) H
next;
+ z( d1 E+ D8 [, O; E) b, k! I3中断语句
: t) S8 @+ g' i I waituntil <condition> prio <integer expression>;
6 \% u$ x* `9 S- \5 D; Q
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以上为常用的函数！
. \, c% C9 y6 z6 h3 ^3 J# w; `还有很多，如有需要我把资料发到你邮箱里 ; E' g2 M. e, Q& V8 e! a
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