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发表于 2012-11-13 08:48:12
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1判断语句' l9 h5 O- \/ L, D' n3 n3 b. A( F
if <condition> then
7 K( j* m' N* i5 o3 y7 w6 a9 K5 } <statement sequence1>;
8 S q& @: p! m& U1 M. Y8 i elseif <condition> then
+ I; D* M% M. ?3 w2 P! W <statement sequence2>;
n1 c) \5 i; a! m* D else
+ Y6 J5 i# G3 i' s# f! O <statement sequence3>;
. M6 b+ o3 G' R( {3 h. R end;
* v" |' M1 N5 E$ W' t# G如果分支比较多，用：
8 o0 h0 k y! u: k$ d inspect <expression>
( p( s; P- M- n0 @9 g when <constant_list> then
/ j7 {. m" [7 J! d# P, r2 E2 O <statement sequence1>;+ }/ P% h3 w5 x$ n C
when <constant_list> then7 s2 u3 d/ d% d3 H) g {
<statement sequence2>;
, g% i3 B L3 n( G3 Z& O ...
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7 Y! u2 ^! n8 i+ {) x/ ~7 Y& v8 s* ] <statement sequence3>; n" L2 R2 b' \! D, M; G
end;
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$ S P3 s/ U4 _: S j2循环语句8 f8 E3 f# N3 D1 P$ w1 Y: I2 I
(1) from <statement sequence1>
) @/ l% C/ v9 U1 V until <condition> loop
# I" J/ Y; S/ V" ]; G3 a3 Z5 r <statement sequence2>;
; v0 m5 ^9 v' u6 o2 b; u2 p& i( I end;
, C% c+ ^ r; U) D2 H$ F" F X' m (2) while <condition> loop
# K0 V5 g+ x7 E <statement sequence1>;
9 ]5 X8 v% o: m7 q$ V end;
; z, E! F3 [, N1 N" J0 p$ z (3) repeat
% d5 B( M* h0 z. a+ |' _) S <statement sequence1>;! t2 o3 Z2 B( _. B9 G6 _
until <condition>;: r( o1 D, {* S
(4) for <condition> to <condition> loop u& a- K: S2 h* H! Q
<statement sequence1>;/ j1 y9 H+ g+ q. X
next;
( d+ W' o$ q8 Q& P" \2 T: M3中断语句7 Y1 B; I, W: z s9 ]
waituntil <condition> prio <integer expression>;
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% t8 j$ g" C; O& O" C5 T# |
以上为常用的函数！
; ?1 Q2 t; x7 H8 C/ }5 R还有很多，如有需要我把资料发到你邮箱里 / r) _% K% u- f8 O$ _
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