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发表于 2012-11-13 08:48:12
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1判断语句# K" ?" s/ p( D4 @8 j( I
if <condition> then
1 P% g$ A4 t4 V' P <statement sequence1>;
# y% K( u: z8 t" I& I* [* S$ N elseif <condition> then
- s3 F3 b% B9 p$ F. k) ` <statement sequence2>;" }7 S* ?0 F7 _# D" K: m
else
x7 H* W( ~# w- ~ <statement sequence3>;2 ~, ^9 T" V: |% E' b
end;
' B: ~( o+ I6 L5 e如果分支比较多，用：
9 p6 ?) r/ {" Z inspect <expression>
g8 J$ ~2 U; d3 O) n- W' F when <constant_list> then
n+ ]- k. I* ] <statement sequence1>;! ?! P# J9 |. W; {9 q
when <constant_list> then
; ^8 k, P8 o( b8 F2 ?! c <statement sequence2>;
$ \' R" Y# Y) O6 c3 z& c ...
% S- \$ {3 f; c7 f3 y else4 n! C$ [/ b' Q3 b
<statement sequence3>;, o/ }) h% Q( K" S& `& R6 x
end;
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2循环语句
0 Y4 n- P1 M8 P! N' a7 u+ E" y (1) from <statement sequence1>
7 S K; M$ ~" q6 v until <condition> loop, |8 m7 L& }9 q* o& Y/ S# g: e7 ^' X
<statement sequence2>;$ X$ H8 V/ N8 f8 `, Z
end;$ I& a: A0 M5 Q+ p! J/ g; j& _3 N) x1 ]
(2) while <condition> loop
- O0 v/ G+ o. B. Z" g F# @# r <statement sequence1>;+ k& P7 |! w; ?: J1 O
end;
8 k! ^* S2 g, Q$ S) e v (3) repeat $ o2 p% g6 Z9 V1 {4 K
<statement sequence1>;
4 l/ V: O9 O4 I* N+ R until <condition>;* P) r8 g K, J' S) n# ?* i
(4) for <condition> to <condition> loop! l$ x6 P& p4 x4 |/ q; u- S
<statement sequence1>;* C0 z6 C) L0 B1 `4 L, F
next;% a1 m8 r3 n# S) b4 d
3中断语句3 q7 ^6 u% b7 Y
waituntil <condition> prio <integer expression>;/ d( i/ w' ^* J# m. D& U# _! Y
$ |+ v& A1 A5 y& a+ w- i& c8 \
! X" F' s) e. b" }5 h; J
以上为常用的函数！
2 l) U' `, p* Y. |" V' k! P1 {# [# e还有很多，如有需要我把资料发到你邮箱里 2 b5 _6 C2 F- r. t1 T6 X6 L1 V" d5 G( v
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