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发表于 2012-11-13 08:48:12
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1判断语句
8 F& W N- N6 V# u% i if <condition> then# q+ v* G/ A7 [; t& v. e
<statement sequence1>;7 w7 E) B6 |, Z2 u8 P
elseif <condition> then8 }- H) u9 E4 B' u0 d5 G! G
<statement sequence2>;
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<statement sequence3>;
8 m5 t, |1 v n8 `5 J) l end;
1 S( V+ f* j0 b+ o如果分支比较多，用：) f w+ j1 m) r5 u% X' _( l, @
inspect <expression>& r5 C" g8 Y) b( N3 v. K& f' Z
when <constant_list> then
1 X8 y8 `6 j3 Q( v5 g <statement sequence1>;# \ O! n9 b9 i3 b$ `
when <constant_list> then& S1 t/ q) h8 e! K& C
<statement sequence2>;
* d$ C1 K( ~# T! m6 z ...
6 J$ h8 n1 U: R# k- {# `7 u else
. ^6 X* N1 S7 v <statement sequence3>;
4 S3 b/ f' Q. C7 ]2 P. T7 xend;/ M. |* u4 E( |5 g8 z5 y6 [$ o
5 O; A3 w. m( d* k! O$ J3 h" e( C2循环语句" p U% A* ]1 [* F$ e
(1) from <statement sequence1>, b) Q! O, O: x4 a. l
until <condition> loop
t ~$ C% z2 P& |1 U4 K' ~5 O <statement sequence2>;, Q. @, N. ]8 }: p! j
end;3 z; ?; Z$ x ]) V
(2) while <condition> loop% l3 K* g- U$ l0 }" J, a) q9 w. U
<statement sequence1>;
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(3) repeat . l2 d( E8 p1 G' l6 h# ]* p+ `
<statement sequence1>;! K4 Q& j0 x% I1 c
until <condition>; l; z! |7 t5 w) a- T; O. [6 L: I
(4) for <condition> to <condition> loop
2 H: H9 K- Y# a' w$ k <statement sequence1>;
- o' u2 C* M' f" P next;
: [/ a. L9 y6 a6 Z/ F! p7 b3中断语句
- t0 t1 Z `2 h1 k) @3 |/ u5 i% U waituntil <condition> prio <integer expression>;3 @* ?* \& S# D0 o
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以上为常用的函数！ S0 Q! R3 l8 E: G7 o. h7 _
还有很多，如有需要我把资料发到你邮箱里 $ M! q/ p" \/ E: X( H& n( ?
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