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发表于 2012-11-13 08:48:12
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1判断语句
3 K4 r# W8 W8 j% t/ B M if <condition> then
) b2 c6 r0 V; p: C) J <statement sequence1>;4 `5 c) Z" ^* P# E/ x
elseif <condition> then9 n$ d6 Q% i% o& [' h
<statement sequence2>;7 P" B( u3 J. b
else $ e" p( h( t) w/ g
<statement sequence3>;
( e' i9 T3 L. u' P2 ~0 t end;
' A Q$ x- z9 s- k如果分支比较多，用：
( j3 v1 H2 o- B; c inspect <expression>
1 L+ e$ Y; F3 U% E when <constant_list> then
$ X5 J! [4 X6 \) F, J' J <statement sequence1>;
0 ?* ]' a+ z3 k2 f4 ]5 X when <constant_list> then4 C5 C6 A1 _5 A: L$ G! i! b
<statement sequence2>;
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else
. L* ~; v: b8 L. j$ V& L <statement sequence3>;
6 S, b# x' e- s3 Xend;
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2循环语句0 q: S. E. _& m Z/ V
(1) from <statement sequence1>
% H; w- T. w0 `8 z L6 ^6 b1 Y# q until <condition> loop
) v# n& ~3 j9 F- Y1 F: g# { <statement sequence2>;
& X3 O; l; _0 e* H3 Y, @ end;, @8 \2 ~9 R# |3 A
(2) while <condition> loop
/ ?! e* F3 N% g. C <statement sequence1>;" o2 h* b- @, ?7 f; q2 H. B) O! ~
end;! ~* m4 ?! Q0 i @" i/ h
(3) repeat 7 q) B! |' M' D* Z8 \5 P
<statement sequence1>;" T$ ~$ ?& h9 I
until <condition>;7 ?# B2 H& M0 B5 J- z
(4) for <condition> to <condition> loop+ K! b) S( G; Q+ m6 f; N( H f
<statement sequence1>;
& R4 h" O7 o! E# O, b next;( w* B6 U, H A# C5 |! f. ]
3中断语句9 B1 o$ c6 v8 h; c$ G. O
waituntil <condition> prio <integer expression>;
! G8 u: K( y9 y$ Q5 F5 E& L3 }9 Z+ I7 p* e8 M r. Y
- r# N8 A+ w4 a! F6 g8 q& l( \以上为常用的函数！: y. o% e6 k8 x& f# L
还有很多，如有需要我把资料发到你邮箱里 5 s7 m7 ? _3 a7 T4 C, W: E
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