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发表于 2012-11-13 08:48:12
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1判断语句
# ]- x: f$ ]6 u* n7 Q( I+ s if <condition> then: o N- A6 S" T: S; |5 u/ D
<statement sequence1>;% ?7 h; \$ g% P" w, t* R) J* p
elseif <condition> then# c+ y% I! W" T. G
<statement sequence2>;% Q, c( e- \* n) A0 I& Q
else
0 g8 H1 e6 o# G5 q <statement sequence3>;
2 p r" n- Y0 { end;
2 h: }# z8 K$ K8 }, C$ J如果分支比较多，用：7 [: G, a9 P1 V* h: F& M+ ^6 T
inspect <expression>0 u& c" M. `, Q, h; ~
when <constant_list> then! F3 k& o2 P- u9 E
<statement sequence1>;: Z* n( W3 U4 h8 |0 O9 m) E0 ?
when <constant_list> then
3 x* ^; f- r j0 C* O: | <statement sequence2>;
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else& t& F$ ?5 ^% B6 z) R
<statement sequence3>;
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2循环语句1 D$ V* r6 I7 m1 \% l3 b( z
(1) from <statement sequence1>
0 ?. W! ]! M% V$ _9 r until <condition> loop
- N$ W+ s/ e+ b$ x <statement sequence2>;
4 x, @! f; D7 B/ B6 ] end;( u ]% u5 e% _+ |, i% Y
(2) while <condition> loop
. C3 P8 B6 {+ @# j6 k* V <statement sequence1>;
. C! K, I$ N$ I! ~. I9 w4 o end;# X% H3 {1 f; Q; ^: E0 W
(3) repeat 1 H' @/ y! F! _+ h* s; N/ }6 _
<statement sequence1>; H. `1 k0 k% c9 w8 l) A1 e
until <condition>;
, G! B/ `( Z% w! d (4) for <condition> to <condition> loop! N/ t% f' r7 ?) l, l5 I
<statement sequence1>;9 E+ g+ U4 f! I @: F
next;4 m7 o' v0 g4 Q
3中断语句
0 X- q6 J/ f; W# ~$ A% _ waituntil <condition> prio <integer expression>;7 H: A' x; J# X( a$ B
A6 e0 I. T% G5 W
% V4 g" z& b# I: d2 e$ h/ _以上为常用的函数！" c! K) \) q5 S$ ], G( C
还有很多，如有需要我把资料发到你邮箱里 ! L( T" w7 I: |, ?
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