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发表于 2012-11-13 08:48:12
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1判断语句: B% V2 X9 H. w3 {
if <condition> then
9 n; y" m* P W- i. V/ x0 l <statement sequence1>;$ |4 i1 J# u3 ^* q' @
elseif <condition> then- q6 D0 M9 [8 O& R. N
<statement sequence2>;
7 ]4 I* r/ Q- s$ @6 ^# @" N9 M else
: J: s' K( _5 U7 h( M. [ <statement sequence3>;3 b- U7 O" M+ k; N( _4 d
end;
* Y. t6 L' x% J, `3 M% d' G- I( I$ C8 j如果分支比较多，用：& u1 n1 \) q1 [5 ~3 p
inspect <expression>
1 d1 |" V5 Y$ c% C* @2 K when <constant_list> then% G9 {# o9 D* |4 Q
<statement sequence1>;
$ L* h4 ~& [' U when <constant_list> then$ U# {! \! [8 p1 N3 H, o4 u8 y: _
<statement sequence2>;
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else" }. h X- q: P: Y- i$ Z2 m0 p
<statement sequence3>;! W+ g3 L- ] i( m3 c/ ~4 s
end;/ E b9 d. N6 a3 E
! w, f$ w1 o" G6 a, f2循环语句4 `8 M) ?3 b6 b
(1) from <statement sequence1># o5 y, Q; ~4 G4 T* G+ z
until <condition> loop
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(2) while <condition> loop
6 A4 W& C3 E: @3 W' {$ h <statement sequence1>;
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(3) repeat 7 o" E% W' {+ [
<statement sequence1>;
" s+ O& c" m; e7 j+ C* I7 `7 d until <condition>;
) m9 M7 g6 L+ s5 L (4) for <condition> to <condition> loop, z0 M0 c# @! [# R N) _* ]" F
<statement sequence1>;
. y7 Q* J! }6 d next;* K1 ]4 [8 [! a& ]6 v9 s
3中断语句/ k E& f9 V7 b
waituntil <condition> prio <integer expression>;
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, J' m% E0 |# K9 z7 [以上为常用的函数！
/ C: A3 T6 ?! c9 x: _. e还有很多，如有需要我把资料发到你邮箱里 : U# t5 O% N ^, ^3 A3 h- s6 [( f+ X
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