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发表于 2012-11-13 08:48:12
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1判断语句( G8 \8 {* N2 O, B" y7 U
if <condition> then1 n; _" m# `$ j( t' {1 f
<statement sequence1>;/ C# {3 J" W6 O) L% s3 t
elseif <condition> then
* x+ X* S' I2 p2 x <statement sequence2>;
q# f' S6 G+ r9 u( B9 D+ k* ? else
6 u1 r+ [5 @8 h( J8 u <statement sequence3>;
, U" [- n1 g* Z end;# c( }* h# W' h' e* \) R5 ^0 s7 Z
如果分支比较多,用:
# G- B' Y9 \$ A& E; a; B% B inspect <expression>$ B. _+ C0 l0 D5 c6 z
when <constant_list> then
% t a/ ~4 F; d9 i4 Y1 [ <statement sequence1>;& i. U3 \; H2 l
when <constant_list> then
; U0 R/ B1 f" m9 Y6 M <statement sequence2>;
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<statement sequence3>;9 y' b" r, l z( ^
end;2 I, N! @1 c+ p# q* e
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2循环语句
# d# n3 t4 d+ R# ] (1) from <statement sequence1>
3 T0 T* @( J2 O/ H until <condition> loop
* _& Y9 h$ u' h* ]# D <statement sequence2>;
5 [# K, o& \) \+ j2 _7 a end;; |# |% T0 {& _$ d9 x9 s+ P
(2) while <condition> loop
9 L1 p& w! z0 A8 l2 X <statement sequence1>;
3 x) h. v( k2 _- h- X5 _, v/ R/ K( T end;7 G" y. W# w' I8 u
(3) repeat
8 y; z+ A, ~* T <statement sequence1>;" g2 T% G* t, p; u1 Q
until <condition>;* e. c! q* @( Q+ M( u
(4) for <condition> to <condition> loop
, U$ w# t; J" x$ p <statement sequence1>;4 q# m; w' T; T7 a1 L* Y y
next;
& S8 H# w) q4 H' ~$ P& H# ~: o3中断语句
. S; _8 {) C" e waituntil <condition> prio <integer expression>;
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5 z# `" H- ~7 F以上为常用的函数!
) ?: _% Z) h% m+ Q1 [& p还有很多,如有需要我把资料发到你邮箱里
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