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发表于 2012-11-13 08:48:12
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1判断语句 {$ Y3 Q0 X% ]% h5 y8 g
if <condition> then
! Q' V/ {$ ^2 X! m8 Y# C5 B. |* G <statement sequence1>;; X( F2 a! c, x: O% n. e
elseif <condition> then
' ~& f' x$ q9 a <statement sequence2>;- E8 N$ i) e: s
else " S! `' ?: j3 _' i; Z. _
<statement sequence3>; x3 ?2 N! A( P8 T: q
end;
# Y7 e; _/ l+ c; ?如果分支比较多，用：
: a1 j7 G3 u- [% w( f# q inspect <expression>0 r# H9 h$ i# f
when <constant_list> then `6 c( b( B- d9 H$ @2 T" d
<statement sequence1>;
3 x: [' n2 w: X5 Q$ u when <constant_list> then/ s: |3 X5 z6 \: w6 p0 v
<statement sequence2>;: u$ f# h, @( ]9 [" T6 v8 |
...( `4 w% G; p$ d( y t
else
# T# I/ e. a0 b* l <statement sequence3>;5 v M& L: [ g' e+ Y; {) o9 Z
end;6 V$ d' t$ V. G- f
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2循环语句2 U# {. o. m, Q4 H
(1) from <statement sequence1>
' a) {/ S; A/ g, e) o4 _( F until <condition> loop
) e- ^% ]- }$ w6 z" D+ s <statement sequence2>;8 F3 O9 [5 I/ r1 x4 G6 |
end;
& k, I1 S! S1 G3 K4 ? (2) while <condition> loop) Q( J/ o3 I' K9 h' A) b
<statement sequence1>;9 X8 r+ Z' D& k* A2 d7 H1 M
end;
" h6 |4 e' {) }+ g$ `4 p! ^ (3) repeat " H( _+ u: {( q0 Z" s* P1 R
<statement sequence1>;1 V& X q) k+ a; g4 m9 v' e
until <condition>;
/ S. }- g0 ~9 p2 w6 A (4) for <condition> to <condition> loop J2 z+ q6 ?( ^: S) e, Z& Z
<statement sequence1>;7 N: B" d8 g# A
next;
, f* L- D% w$ e% }9 n$ k. Q0 f3中断语句
: q4 m, ^6 j8 h3 i; W8 _+ K3 ~6 d waituntil <condition> prio <integer expression>;9 O" C* K% v3 p7 S, v- L" H
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以上为常用的函数！
) W2 B [% q5 L2 {. I还有很多，如有需要我把资料发到你邮箱里 ) S) t1 O2 A" V
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