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发表于 2012-11-13 08:48:12
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1判断语句
9 z% x$ s& a" `. U8 l o8 ^5 E if <condition> then
4 E6 ?, X' t5 u; w4 T; `1 \9 i <statement sequence1>;; C5 p+ E0 ~1 S& D U. ]( J; R
elseif <condition> then. i& H+ Y( z7 }2 q) J! Q" n
<statement sequence2>;
6 R# \2 k. a) P# u else % R& O( o( F; ~$ r. x" R" b
<statement sequence3>;
& U( }/ \2 Z/ S( ~ end;
4 R1 H: o0 D, t% Q如果分支比较多，用：
; ], `+ R+ V0 K/ o1 S inspect <expression>
+ T) n& |" z6 l+ M. r when <constant_list> then; d: P9 p0 D& ]$ S- e2 g
<statement sequence1>;
/ Z, u" ^, O4 M; f- d' c* @ when <constant_list> then
1 F0 g# F( v% J, | <statement sequence2>;# I/ d, x. J" l5 c3 ?9 G
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else' A1 d# i- l% T2 c E
<statement sequence3>;
T+ E$ k' l' `- m0 R( aend;
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/ w4 B9 p" M/ Y' I! r1 A4 D: ~2循环语句. E9 M& W9 H! |5 ?8 F6 ]* q' K5 j
(1) from <statement sequence1>
+ C3 E% A! X& L% { until <condition> loop
* l' S$ i; K( J; F' ?/ d+ q7 W) y <statement sequence2>;
! @ `& ^3 V% O2 p end;
) I7 Z4 ~ M9 m (2) while <condition> loop
- }- M, _. e* F: e9 ? <statement sequence1>; L! L$ C4 K3 q9 z/ s5 X7 f
end;
; t/ T: u& t a6 k3 {. z (3) repeat - K; z S/ {+ L3 B# a
<statement sequence1>;+ t; R9 O3 Z& }" A! W6 F
until <condition>;
8 I% s% y* G6 O0 e7 x (4) for <condition> to <condition> loop, i) ^5 Z6 K, E/ X9 _( `5 ?, f
<statement sequence1>;/ B; h1 M2 m8 N0 W5 n6 \+ ?9 P) k/ @
next;+ G/ J0 [- _' Q( U0 d2 n
3中断语句2 |: S# o1 `* e# q. S2 D0 r
waituntil <condition> prio <integer expression>;, I, I' W R# [* W. [( J( C
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* V) l; g; L( F, n e5 H以上为常用的函数！
& f8 Q/ _# ?0 ^7 `) d. ]: b还有很多，如有需要我把资料发到你邮箱里 * s/ ?; ^! A: I% ^" w v1 [! J K
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