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发表于 2012-11-13 08:48:12
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1判断语句5 `0 A6 U+ J1 ]! w- a2 D1 l
if <condition> then% N! m; _' R0 c1 ?. p; b$ n0 d
<statement sequence1>;
4 c5 L+ ^ [& ^) ?% i# g elseif <condition> then& v& o1 p7 s2 c+ H, u
<statement sequence2>;- o5 |1 h% L+ F; L
else 3 ]/ p6 _ I" \6 m+ G0 l
<statement sequence3>;2 `. {$ z o5 Q' ^ _$ d/ h* c
end;7 N3 t) z# Q; G! o* ~
如果分支比较多，用：
j M4 ^4 X$ x8 C& P& Y/ v& b; _ inspect <expression>! w+ `: s; @: f% l7 \- x. G) e
when <constant_list> then# |- j* } p/ g. v) _
<statement sequence1>;
% v( I9 L% f$ h1 z. b J, [6 @( j- U when <constant_list> then
: z% S) w" s- b. s6 u6 j <statement sequence2>;+ E* ~( {4 J4 c. K( d5 }
...
. T4 n# [/ h2 V6 l. x- Y: u else
/ Y/ f7 S4 H( f v% w9 Z1 j% @' w <statement sequence3>;
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2循环语句6 ?+ k6 F7 @( @9 ]# i( n
(1) from <statement sequence1>" b# c' L0 _1 [# O
until <condition> loop
. A* a$ j9 d; e4 g( x$ ~" I& c <statement sequence2>;
6 f+ S* N5 Q! j% r" K/ q0 O end;4 O2 l' b3 O3 k& {# a, Y" X! F6 E
(2) while <condition> loop
0 `7 i$ Y% r1 Z) i, B/ g. L6 {* A <statement sequence1>;/ {* y4 I' [+ @0 i7 O+ J
end;, I* \4 T! S7 R8 X' T3 o1 S
(3) repeat ) Q2 I! z1 i. S/ U
<statement sequence1>;$ v; h; |9 o- H/ t
until <condition>;& U1 u9 q' c$ }1 y2 a. v# J3 U
(4) for <condition> to <condition> loop& \" B5 t# C' K3 o8 `
<statement sequence1>;5 c1 ~" s) T8 w, F# [6 M
next;7 I' ~- k. w; w/ t+ P5 C: Y
3中断语句
% _! p3 w0 o' w2 B waituntil <condition> prio <integer expression>;/ j" W$ C" f- Z+ M9 I) G
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9 o9 _1 k6 _& q, u# O以上为常用的函数！& e1 f+ J, ~, H, q5 j" {
还有很多，如有需要我把资料发到你邮箱里 & r0 M. Z. ~% O4 Q4 u3 Z
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