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发表于 2012-11-13 08:48:12
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1判断语句
+ r& j/ |" N; B8 b% \% w2 F2 e if <condition> then. Q& G7 A, L( h: J
<statement sequence1>;
: E0 G+ i, ?- j) U+ _ elseif <condition> then3 b& Y$ z8 @& Z
<statement sequence2>; G- \4 h' v; j9 O8 `' X9 ?; T0 T
else
( a; h5 ^9 n6 n8 U, Z, f( y) g <statement sequence3>;
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如果分支比较多，用：
, P4 I3 a3 r6 k# R( `5 c$ V inspect <expression>
6 ]1 T9 q# t) ` when <constant_list> then
& R, e- T$ l) U8 A0 m <statement sequence1>;4 Z. v: Y0 D* K0 g
when <constant_list> then+ f) g* E% z$ P
<statement sequence2>;
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else
( B2 e+ R! N0 v: ]; e <statement sequence3>;& }+ O" H! s. y7 W8 J8 J# f
end;% s( v& }* `) h
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2循环语句
; J6 u9 b4 [' [. o7 B (1) from <statement sequence1>
" Q8 w: v7 r" U/ Q until <condition> loop
1 v" g* j! V1 G0 Z <statement sequence2>;; E: g; b- @4 f8 j4 g+ Y
end;' B0 v( v: G3 U/ L, ~' C9 G0 q
(2) while <condition> loop
7 t" |9 D/ R1 j4 T) J <statement sequence1>;
& m- ~/ Y: d/ z9 f end;9 m& x" S9 Y0 D
(3) repeat
7 [ ?3 s% T! @7 i. c5 p" Y <statement sequence1>;
1 m% G( P5 O9 W% O/ R9 n: R until <condition>;& \; E N( V8 |+ z% T, o8 k1 ~! C4 A
(4) for <condition> to <condition> loop
7 O6 L' P- q" } r4 O3 D) J6 h) o <statement sequence1>;" B/ W" W7 ?, s3 Z
next;+ J; \, `) e- l9 _
3中断语句- E1 {) [) s$ D |. i' p' q
waituntil <condition> prio <integer expression>;
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, g( i2 I: @; a6 m以上为常用的函数！
, M+ T! b6 B! {还有很多，如有需要我把资料发到你邮箱里 6 Q8 @3 p! c1 P9 G+ I
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