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发表于 2012-11-13 08:48:12
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1判断语句3 T$ m4 F' e8 w8 y4 \5 t j
if <condition> then. d6 y$ U9 ~- m6 V3 z
<statement sequence1>;
8 {: J$ h( m3 k4 ` elseif <condition> then( Q; ~9 |9 c$ Q/ p
<statement sequence2>;
6 D. L* g8 Y e) p9 `6 r4 G else / S$ j K ~! Z3 x
<statement sequence3>;
( B$ e$ E/ X) H5 B7 O' F1 j2 N' S end;
6 W s! Y1 o% @& E. z0 D如果分支比较多，用：1 C4 M1 L" v* X- L
inspect <expression>9 F$ e& @8 f4 P0 g
when <constant_list> then i: t8 v5 @+ h' T; a) Y
<statement sequence1>;
7 K9 B* i* n+ F when <constant_list> then1 ~5 g8 F9 d8 ?2 |: m% r/ _; |' H
<statement sequence2>;
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else
- J/ u. j: t- m/ ]6 K <statement sequence3>;
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2循环语句
; l5 h8 k. R! I0 W- \4 j (1) from <statement sequence1>9 C l8 H: S5 Q2 b+ H
until <condition> loop
/ |0 ]5 b; S# S/ d: G <statement sequence2>;
* [+ c* u4 I' f3 [8 U: p7 a \' } end;3 O, d/ t4 E# E. v' z5 T
(2) while <condition> loop' S% @4 v" s9 J6 J+ b' E! G
<statement sequence1>;, d& T! J5 l# Q1 a1 ~, ]# p O
end;
9 j) Q! \: T% r7 O& w- ~2 d% X (3) repeat 8 ?9 c4 z. W3 }
<statement sequence1>;! P4 F f+ {" O# z Z# l
until <condition>;
7 `$ u# t0 A% Z4 V) @+ S( h; e0 s (4) for <condition> to <condition> loop
5 R' M7 @1 \6 g" @: M8 V3 | <statement sequence1>;
|* R' i" `+ E: J7 \. D9 T next;
: h6 @6 M" B9 S5 n# W% J3中断语句 {4 T* y' J0 b% Q+ [6 j$ a9 M$ d& |
waituntil <condition> prio <integer expression>;; ~! j3 S+ g" q. _8 E, |3 a# R1 }
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以上为常用的函数！
! \$ K( M& \$ n2 G4 {" C还有很多，如有需要我把资料发到你邮箱里 4 ~9 C( t3 g) X1 k$ V
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