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发表于 2012-11-13 08:48:12
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1判断语句; V5 M @( ^, F$ d
if <condition> then8 t! g; O/ t" R9 @$ I) Y3 S
<statement sequence1>;3 o1 S+ P0 Q( i1 I* |0 ] c
elseif <condition> then
+ C* S) i6 [* k+ ?4 f <statement sequence2>;) b$ S7 H9 H9 s, b6 \
else , m/ I) C F, @, G1 {3 ` S* E5 q
<statement sequence3>;) P8 }# x% [1 T' G/ c' u* E
end;/ k" O; K# O6 C- X# F* b
如果分支比较多，用：
; e/ j# j) X1 e+ X$ z+ _( o" [8 I inspect <expression>
0 p3 q% Q& q3 |; j8 P0 [9 [ when <constant_list> then+ a6 d7 [4 _2 l8 G. a$ l/ U
<statement sequence1>;) ?" h5 D. H S3 o- _" ]) ]
when <constant_list> then
+ z5 M1 U- k2 i/ `# }1 |, K <statement sequence2>;
) b# B( |6 I, N ...
/ z) f9 ]; F) ~- c else
' E1 G d6 Y% i0 }3 G: }! y! x <statement sequence3>;
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2循环语句
/ k; Y) N& d: V @ (1) from <statement sequence1>
/ y2 o9 M+ ], w# ]' E4 N- ~9 v( O until <condition> loop
9 h# o/ h3 r! H* } j: Q" M' f <statement sequence2>;
& k% L+ H) [- V+ X end;# d& j8 K: ?' I" M$ v
(2) while <condition> loop. o6 B& a8 R7 V6 ^! m" g7 R1 l
<statement sequence1>;
0 p+ Y; X$ w1 q0 }' j end;/ c( @! d$ y7 R/ K/ u% U3 l
(3) repeat
" r1 a! N+ z6 D6 i( i% h' X <statement sequence1>;
, u3 O1 B5 ^; e+ j& s: p$ C until <condition>;8 a1 U3 }6 ~7 r! d' C7 g9 K5 B0 l
(4) for <condition> to <condition> loop6 k5 L3 Y9 B0 b% k
<statement sequence1>;: m7 m6 S# G, F$ w# {8 x7 c
next;1 h. Z! Z8 W, r
3中断语句' p* C, B0 k- a+ [
waituntil <condition> prio <integer expression>;
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以上为常用的函数！
! P2 h: d$ w* t: P0 F& Z还有很多，如有需要我把资料发到你邮箱里 ' q6 i5 h' a3 |
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