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发表于 2012-11-13 08:48:12
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1判断语句# r1 U. q- q- c6 g+ E
if <condition> then
) `0 L/ }. j C$ j+ B% f <statement sequence1>;
8 m3 E( e7 `( [2 @) g: L) E elseif <condition> then
2 N5 l/ y/ |& P, f* C) ~# z: O$ Z <statement sequence2>;
) I% _$ x# x: b" d/ C else
6 L3 p1 G4 p1 E <statement sequence3>;
. T9 p+ M) s6 L) a b0 S. | end;& |5 Q! F$ w' R6 R- s, o) q7 h* Q
如果分支比较多，用：3 M' x5 ~ N' S9 j: r4 x
inspect <expression>
! x1 T# C" z! @0 u% K @ when <constant_list> then4 W& o9 `. J& _
<statement sequence1>;
' A; d7 [$ v) ?6 H; \" u) t. [ when <constant_list> then6 d4 K0 R, Y$ X' R
<statement sequence2>;
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else
: @* z# w, X. d( b+ G3 { <statement sequence3>; m! n! s7 F# {: A2 `7 a2 j
end;
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2循环语句- B$ ^' Z; c$ y& M. i! | e, m
(1) from <statement sequence1>. W9 d' o! Q2 K- N1 f5 R
until <condition> loop
# M. m3 m' M5 _4 O. G( b- l <statement sequence2>;8 r, o$ S, J, V; f& i
end;- t- ~: _0 I/ a
(2) while <condition> loop
/ J- b& e3 b, U <statement sequence1>;- S' i( J9 I. g6 P
end;6 D3 U) x! Z: k- k5 u
(3) repeat ) ^5 Y) J6 g3 \+ g1 x
<statement sequence1>;# v: {% l( d- @3 q
until <condition>;
. Z4 _9 R6 ^3 Q3 D: f7 Z5 ^: t7 k7 A (4) for <condition> to <condition> loop
' l* [8 U0 g$ ? z; n <statement sequence1>;
+ z& v7 Y0 j9 g8 p7 R) J. u next;
! y6 j, T$ D7 ?3中断语句; S2 u4 L; A3 l) E! f* o; _9 K
waituntil <condition> prio <integer expression>;
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3 D6 v" R0 L7 q7 p6 l8 F& T- v以上为常用的函数！
, n5 u, j- ~0 ?) |还有很多，如有需要我把资料发到你邮箱里 , J+ G, f( X# s+ u3 P* a- A/ S! [7 v
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