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发表于 2012-11-13 08:48:12
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1判断语句+ y% N7 B% s3 a- D4 G
if <condition> then
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elseif <condition> then/ H. {8 k! ^. L
<statement sequence2>;
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<statement sequence3>;" {2 j l b y' y: g% h0 g& L5 P4 d
end;
% `$ }0 ~. m/ h) R- i0 t/ w! E如果分支比较多，用：9 b; E6 s5 G1 `! k% V* K: u m
inspect <expression>
: r1 c+ E& V1 y2 ?' g4 e when <constant_list> then4 X: E( J* B$ t% e0 K0 O( Y
<statement sequence1>;0 l( Z2 b6 F6 H
when <constant_list> then
) z1 Y2 u8 x( D! i <statement sequence2>;
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else
; S+ K& ~& ?+ w( D <statement sequence3>;% F. L3 y4 u7 i- Y, w! r
end;
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- z0 k$ a: l* b3 W7 _2循环语句
8 e0 o% v5 ]) R2 f4 D6 J/ w% d (1) from <statement sequence1>- y' M: c! c3 P6 B, F3 B
until <condition> loop* L% S7 E; ^5 v% A
<statement sequence2>;6 U2 L; B; s- I6 S- K' K8 m2 B
end;/ h. w" I- b' k7 {& o
(2) while <condition> loop
( K( t( Z3 } J <statement sequence1>; E, E# K- @" Q- m* W
end;- b) | w, t; h
(3) repeat ) N$ |: ~8 |* @
<statement sequence1>;* @" b- q* \/ V6 x2 b
until <condition>;+ X! X8 h% I$ [- b9 ^
(4) for <condition> to <condition> loop
! h( ~/ ?) W7 z. }& a" r* G <statement sequence1>;0 b0 q: W7 S/ m, e1 z
next;2 a; h8 ?3 U# n
3中断语句
9 D& |6 ~$ S6 e& [. y waituntil <condition> prio <integer expression>;
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以上为常用的函数！- X! E7 o8 }$ d; [. S
还有很多，如有需要我把资料发到你邮箱里 k4 I9 b n+ ~# K' C( O! ^- J0 g
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