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发表于 2012-11-13 08:48:12
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1判断语句
4 t1 v. F Y# \- x" u if <condition> then
# l* |/ Q0 ~2 i <statement sequence1>;
& L$ ^; q. x7 g; F elseif <condition> then
2 [& }0 |& g7 ~4 i <statement sequence2>;% Z1 q* S: }# u
else / a" S8 f2 j9 @5 h. u
<statement sequence3>;
3 q6 M. k# ] @9 x% _! X6 ^* C end;
& [: g6 A$ C' ^; K: a如果分支比较多，用：
1 x; C% \/ W0 G2 D( X% s }0 ^ inspect <expression>( Y# W0 U) n+ z- i; L$ {( V
when <constant_list> then# d) R T0 z4 x7 e* S
<statement sequence1>;
" K8 ^" q8 p1 u' c/ \; R when <constant_list> then
& ~" N3 t% o6 N( y$ g <statement sequence2>;% d0 t" x: L- F) u9 x* n- w. Y
...9 B6 ]6 g$ y1 S" ~5 X' j4 @7 S
else+ p& c @$ W' P: y/ e1 ?7 V. `
<statement sequence3>;
/ D4 V$ s0 _* n) a# y1 k; N" eend;
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2循环语句
, p3 g4 z; f- r. D+ F (1) from <statement sequence1>0 ^4 s" I: A9 t W2 u1 Y; C
until <condition> loop5 m7 t9 D& K3 G3 L
<statement sequence2>;
4 A$ l, Q$ H/ y9 {2 p" W4 b end;
3 g; G" n% D/ R8 I3 l (2) while <condition> loop! q) a) v4 @: G5 r# C
<statement sequence1>;
( ^" V4 c g5 n- O$ p end;
% u8 u# {# E4 z# P8 T# p (3) repeat
& \/ }2 f$ t" ?$ G4 b6 _ <statement sequence1>; M/ ?% A( E9 l4 S: A
until <condition>;. \% \+ ^& u7 v2 g: H6 V
(4) for <condition> to <condition> loop3 j( Y* ^1 S' k; A! [: e
<statement sequence1>;7 m! ~& _( @. P3 }( E( U7 N
next;9 }; e' p" J- r' w. ]5 E$ C
3中断语句
! ]# Q6 q$ J9 t' O waituntil <condition> prio <integer expression>;. w2 u0 e, [* ~/ N) o7 H/ T3 K
# L1 Y9 p0 i2 O H' n0 p/ u- L ?5 y/ Y
以上为常用的函数！
* h- a1 F/ I) e! z/ R, [还有很多，如有需要我把资料发到你邮箱里 5 V; p0 t7 R" y: h# {: w2 k! M: T3 G
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