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发表于 2012-11-13 08:48:12
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显示全部楼层
1判断语句
9 _3 O4 D: O4 H0 j& }' X7 j X if <condition> then) A8 T& R5 K3 q/ L* B' e; n
<statement sequence1>;; y* G% |0 h4 r4 [
elseif <condition> then
; ?6 a: h W# [ C2 Y3 ~+ S& x <statement sequence2>;
1 b8 G/ F5 G% H; g else 9 C8 V8 S& g0 `( a7 r9 s1 H
<statement sequence3>;3 C( N8 \5 {) Y
end;
8 E6 P1 n1 L. T- C5 b8 ~& H/ A如果分支比较多，用：
% K. @" N3 d/ c, P inspect <expression>
$ A( t( f. G* V" ^: Y3 j when <constant_list> then
: d& ^3 X6 T, V9 v <statement sequence1>;4 K# R9 E3 i% C0 y) J7 c
when <constant_list> then
/ ?4 T1 ^' c4 P! M# A <statement sequence2>;8 E7 S: j1 y$ b6 x
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else
* U: q4 q# y, R$ o9 B% d <statement sequence3>;, ~ m, w1 s8 U: R
end;
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2循环语句5 L1 ?. L8 i o0 c
(1) from <statement sequence1>
8 ~: x1 e, v* V' V0 l4 ^ until <condition> loop7 \ R# ^, \: Z8 r; s+ Z
<statement sequence2>;
/ ^9 X; @/ @" s) p" t8 g end;
, E, s8 g6 X0 H8 g. L8 Z (2) while <condition> loop* S# t' ~1 x; n1 Y+ o* _# ~+ x; W1 P
<statement sequence1>;
6 y+ ^3 Z$ B5 P1 V end;& `8 D1 p5 ~& p0 J5 i- M# \$ y
(3) repeat
+ b( ?: P7 \# D# t <statement sequence1>;5 M0 Z( q! W+ i- r6 U5 ?3 _
until <condition>;
+ N# b% j) |7 x. k1 a (4) for <condition> to <condition> loop
' y( G( z7 g/ C' F4 K v @( {8 h <statement sequence1>;9 b$ C5 a2 @2 _) O' k! t- u
next;* b4 l# n8 {0 }' n( t$ Y
3中断语句
' l' y3 ^9 a! Y waituntil <condition> prio <integer expression>;& \' `! r! k0 }0 V
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以上为常用的函数！% @$ C' E$ m0 \' a
还有很多，如有需要我把资料发到你邮箱里 . K! p7 x1 v$ F/ g
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