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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" p, s+ E' y% i& p/ y
if <condition> then
( Z: B9 {: x w6 \. D- Q <statement sequence1>;+ _; ~$ @% p6 z/ U# Z" [% c7 b
elseif <condition> then
' y, W( d2 h- {9 G9 {( N& a <statement sequence2>;* b+ y, ?1 N1 p7 |5 Q& {" H6 q
else ' D u" q! J% m# b; P: \* K
<statement sequence3>;
& u+ b/ S) g! D, Z end;
1 @( e2 s: { H% k% a+ _) B如果分支比较多,用:
5 _5 X' n+ z t inspect <expression>
) J; Q% Z" J- X% E5 Z when <constant_list> then* U* B$ W( [$ i2 Z% P
<statement sequence1>;! S% b+ H# o3 c; t3 k8 Y
when <constant_list> then6 j7 C7 k! B. L- Q4 v
<statement sequence2>;$ O& M$ {8 x" P
...
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<statement sequence3>;# L8 y& V& A* k$ D* v+ g* E( I
end;
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6 T6 z1 ]- ^$ I O" y- z. F V# u2循环语句* p- A8 I) o( h
(1) from <statement sequence1>
9 f# r6 w6 D3 M% T until <condition> loop+ v: V5 }- c: ^) d; w. O8 y
<statement sequence2>;) ?$ n z1 H( t/ \6 C
end;
# x" G, W) b3 w. }# z, y2 N& e% T (2) while <condition> loop
1 H" i2 @6 x: T0 } <statement sequence1>;
$ K8 b" o9 v6 a" N! `: l end;
' a& Y. t9 s( f; d" f5 F9 Z (3) repeat
) i1 l) M4 g! A4 z7 Q& s <statement sequence1>;
+ ^# z* ?: W, B( r" e: x7 X until <condition>;: U5 q5 W7 R V2 Y: m
(4) for <condition> to <condition> loop
# t$ J1 V; r7 J3 v6 w3 L% ? <statement sequence1>;
1 L; x. A; f& m' V next;; s w" x2 s3 U7 h; { n- z4 T
3中断语句
$ M5 F( U# h( t; O$ Z% J- k n: f waituntil <condition> prio <integer expression>;
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- b) f [8 g( R$ b y
以上为常用的函数!
4 B% i& m* c0 L3 d还有很多,如有需要我把资料发到你邮箱里 + s! w9 F$ G7 u* n7 y/ d6 p @
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