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发表于 2012-11-13 08:48:12
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1判断语句% y0 W5 P1 P1 E; O0 C
if <condition> then* s1 Z5 [& l% d q: A. S
<statement sequence1>;
, o3 ]. I3 b2 V3 c# Z elseif <condition> then. v8 q! t" q6 p" f1 \% p
<statement sequence2>;
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<statement sequence3>;
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如果分支比较多,用:
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when <constant_list> then
& B- y: F* O; i4 d% Z1 o; r <statement sequence1>;
1 f, ]+ {7 i, i" C when <constant_list> then
7 ^ T, y% ], I <statement sequence2>;4 h# j8 M/ a1 [9 O7 C( ?9 z3 K8 I
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else
+ s( |2 c/ ]* k <statement sequence3>;
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2循环语句
( a+ E+ u f# d9 ]) E, a. \# b (1) from <statement sequence1>+ f4 z f% `" P/ c! D
until <condition> loop- L9 U! c7 x9 h [' ~6 J
<statement sequence2>; }7 g, B" F% ]
end;- q0 i$ @4 {! m j: M
(2) while <condition> loop
2 [' ^* L ]: ~2 [% Q) J2 K <statement sequence1>;
' _2 _5 {0 F9 _- ^ end;
) I3 ^, V% U7 P" ?( w (3) repeat # K, Z C$ Z: V; i/ n
<statement sequence1>;
- O- S7 o) ^( B: }* {7 G until <condition>;
7 T; ~, D$ g1 M* s& [5 [+ F (4) for <condition> to <condition> loop$ ~7 O, J* z# I: F# A2 ?2 e
<statement sequence1>;# Y) M: T& ]6 f% ^8 ~5 @
next;5 q0 b* \: O# `
3中断语句4 F8 Q+ A3 h) Z; S6 t2 Q
waituntil <condition> prio <integer expression>;7 v! B7 e t9 j" J9 w7 e2 L
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0 V0 q S5 G1 i0 s) h以上为常用的函数!+ V5 z* w2 n8 k6 t1 p, w9 O
还有很多,如有需要我把资料发到你邮箱里
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