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发表于 2012-11-13 08:48:12
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1判断语句5 P6 U+ Z( f7 ?: L
if <condition> then- u/ a1 q7 E& h4 {' L+ [ B
<statement sequence1>;4 b5 @/ J6 `- V, R1 b$ N! g9 V
elseif <condition> then
- v0 G) D: f3 z3 p5 E, k% Q <statement sequence2>; p. a& W2 p) y( X/ }) L& a' N
else
( J$ d+ @; e& t9 J <statement sequence3>;
3 n: z& A! c/ i& X end;
4 U, i& g& y5 ?$ | f7 z如果分支比较多，用：
# w) C8 V" \9 K% A' S inspect <expression>. K. V$ k y) F t7 M. z
when <constant_list> then7 C( W# l, z) H6 G0 \
<statement sequence1>;
! }/ ~$ c Y( Z, q6 X when <constant_list> then1 S4 p1 _1 N% u4 K* l! I
<statement sequence2>;
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<statement sequence3>;! @' [ \8 p' U
end;
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2循环语句
3 w/ E$ f2 `2 R& z# ~) J' V (1) from <statement sequence1>
- x$ K D& s ~' D7 R5 r until <condition> loop/ a( G9 ^2 o; Q1 V
<statement sequence2>;3 Q6 A. k. c+ P7 A' [0 o* ` i
end;; u! w7 N7 G/ s! B
(2) while <condition> loop
% x1 S7 k; y( f! [! A4 @5 w <statement sequence1>;
- ~/ Y- s( b* ^7 g0 t; T$ w end;
/ h6 c$ L9 R) X1 K+ y. A3 _ (3) repeat 0 G% c8 K) G1 |- U7 Z; L+ g
<statement sequence1>;
- x# c% ~+ h6 e5 `" F until <condition>;) W3 N/ o. i. J& R: ?" ?% C
(4) for <condition> to <condition> loop
" N# J9 c2 H. q& c, j8 D l <statement sequence1>; D v3 Q4 Z6 B1 V. Q
next;
4 W7 b; \: F' J# ?* \3 Q' V$ \7 v3中断语句/ p4 Y. b# a, N- A, x% H
waituntil <condition> prio <integer expression>;
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* d9 P, @- a1 Q7 X2 h' p' U以上为常用的函数！; P0 l1 U- D2 {6 }0 D
还有很多，如有需要我把资料发到你邮箱里 % [( p. @5 H d* H* z* k* Y9 [, j1 y3 e& D
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