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发表于 2012-11-13 08:48:12
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1判断语句, s- t. S! q* ?% o% U# i
if <condition> then0 g' ?9 J0 Q7 P
<statement sequence1>;' K* `0 F- G. v# B# x
elseif <condition> then+ {; [, _" e8 C8 f# f- R
<statement sequence2>;% y2 c) R$ ~" ~9 w! U
else * L6 x7 H& X& R6 W9 M
<statement sequence3>;
! Q6 {$ T5 x6 E6 i& N5 a end;
9 f. i+ ^, M, k4 c如果分支比较多，用：
s7 n* C5 H% H4 M V Q$ z k inspect <expression>$ l% }2 I% }" s j
when <constant_list> then ^" \; b% G. `% K
<statement sequence1>;! }! Q }7 n6 A. @0 ]7 j Q$ S5 f
when <constant_list> then- H+ h/ [" T7 B- L
<statement sequence2>;
0 I& _( v2 A" w6 B g7 c% B7 Y* V ...
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<statement sequence3>;
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, d" h" a! u) k# e) [4 P+ q; X* N2循环语句
h" e3 X$ S: R& X5 s, s- U (1) from <statement sequence1>
9 X! W1 h/ n/ M5 f) ? n: m5 X until <condition> loop
) C' t9 ~/ ~( E- y; V <statement sequence2>;
% x2 G1 h. p% L+ U end;, w# a7 l- o/ q8 m3 t
(2) while <condition> loop+ \/ W4 [7 @! ^: i1 t
<statement sequence1>;& h6 H" g( M- R; Z6 I5 f
end; T5 Z8 h8 V# Q
(3) repeat
3 u) l% Z8 `$ n7 ` <statement sequence1>;7 |3 p) D4 l4 Z4 |9 k" X
until <condition>;
7 j3 g& v- f y( M4 e (4) for <condition> to <condition> loop
! a7 g5 B. ~1 S' w$ w: q; o7 e( e <statement sequence1>;! e/ `9 G, d: e! p) v: K
next;
& u7 K/ q6 a, G3中断语句7 [; k' Z, W% q& T2 c
waituntil <condition> prio <integer expression>;
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7 w: A) _' J8 w! c以上为常用的函数！ G. p) i! s, r/ X# e8 d: j) \
还有很多，如有需要我把资料发到你邮箱里 0 v2 `: V1 I0 J3 r( Z* g$ ]
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