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发表于 2012-11-13 08:48:12
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显示全部楼层
1判断语句
; V3 h/ K2 a4 t1 g if <condition> then: P+ C( j. h7 u
<statement sequence1>;
( Z# J# c& h9 D elseif <condition> then" s! I- U$ Q5 x: j# w7 q! k/ x
<statement sequence2>;6 B9 b2 D: O) A' V/ K
else 0 z9 ^+ A5 M' P; Q" i4 z4 j
<statement sequence3>;
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如果分支比较多,用:
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when <constant_list> then
9 F1 ^& M( S/ j' D3 v6 _0 u' K <statement sequence1>;/ F( k$ `1 \: Q& H
when <constant_list> then
C3 n. J9 a- s6 e <statement sequence2>;3 e+ v8 r) O% j; `2 i5 _; `" [
...
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. }; Z" ]- J4 A/ A* p9 N5 U <statement sequence3>;/ `0 k8 C# W" I/ i& n0 G
end;
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2循环语句
5 R% C" P) w. \2 o9 F& G (1) from <statement sequence1>. X: i- W( q' L3 I0 N- u
until <condition> loop
3 Z* T" v( x* b: y2 H7 Y. { <statement sequence2>;& \ C% d: C7 T l7 \
end;
6 ?) Z: t. A/ f$ d$ b (2) while <condition> loop0 D# l( I7 l- K7 b- K
<statement sequence1>;
2 B4 p, ]. e# I5 m end;
* a* [9 Q* `2 v M (3) repeat
8 `( d" \$ C/ w' V" a <statement sequence1>;8 s' z* r6 f8 r* y8 b# |
until <condition>;
! E6 r+ b4 L" ~8 x (4) for <condition> to <condition> loop' o$ v0 r3 G0 q. e: M P. B) D0 ?
<statement sequence1>;
( i" Z7 l' q8 g J9 j next;
8 L3 ?+ ? ^* C0 \( Z- c" n3中断语句
|; r" s; R8 z ` waituntil <condition> prio <integer expression>;
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以上为常用的函数!
8 g3 T: U& I2 `$ G; ?2 s! ^还有很多,如有需要我把资料发到你邮箱里
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