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发表于 2012-11-13 08:48:12
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1判断语句
/ n' m& A7 Z _* X& f$ L3 f if <condition> then& H- n' x" G+ A4 o0 ~
<statement sequence1>;; c0 P4 [3 b' F$ B
elseif <condition> then
. K( l; x3 B& F( V& [ <statement sequence2>;
: W" m7 W) `! e( H else
$ j/ h' L5 @! ]/ b- X0 G <statement sequence3>;
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如果分支比较多,用:
# e2 ]3 s2 T6 g" D: m% E9 k8 R inspect <expression>
( K X0 Q6 b$ H when <constant_list> then
: V) a0 y6 Q+ l- L# o <statement sequence1>;& a' k, G9 w, K/ u1 _$ x2 Z
when <constant_list> then
+ j/ ?/ ~2 T; B( G$ h5 T# P <statement sequence2>;
7 W/ x5 `+ g6 N9 n ...
7 S6 R# S A8 f2 H+ O/ l else( c5 i+ x/ h' w! _
<statement sequence3>;
6 g/ Y% m3 p" o' `2 w% G6 M/ b9 Aend;+ w8 q1 u; v! p* h
$ E1 @: D9 W$ S, L; }8 r# H' M' o2循环语句) X# s+ ~3 }) r0 w
(1) from <statement sequence1>% K, O7 E: T1 k+ e: D, Q$ a% {2 z
until <condition> loop
# r7 d1 b0 T: B% v; a) t! \ <statement sequence2>;1 r' ]% O8 h Q! F+ x
end;) h/ J& f" Y, P2 T8 E9 H! M
(2) while <condition> loop
& p6 e1 Q+ T+ `) \0 h y <statement sequence1>;0 G- o5 L1 T% Q+ v! ]3 X
end;
- b; `+ i8 l+ R (3) repeat # U& \2 b* V# s0 I/ _
<statement sequence1>;$ j! K- m" J* q4 n; H% j& w7 r1 [1 w
until <condition>;% Z- d V; X& G9 _
(4) for <condition> to <condition> loop4 E2 k( K; X% C& W9 `, L/ o+ I
<statement sequence1>;
+ ~ `" k( \1 L3 ` next;
0 ]* G$ [, R# _7 O3中断语句
1 `" k2 J" O6 k1 j6 ~ waituntil <condition> prio <integer expression>;* w' U- k _7 T1 @
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以上为常用的函数!$ i$ w1 i& a0 [$ s, E5 s
还有很多,如有需要我把资料发到你邮箱里
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