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发表于 2012-11-13 08:48:12
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1判断语句# K1 a2 A' z9 u6 n+ {3 R
if <condition> then
' C+ m; A, z; U4 Y2 b5 Y5 ] <statement sequence1>;
% C+ d: D3 X! \$ p0 w elseif <condition> then
$ _' i7 B/ {- {/ k0 W0 A% { q <statement sequence2>;( Q3 U! ~8 g( g% e
else 9 h" F+ H6 v/ {0 q* r8 n. |7 e
<statement sequence3>;
# w! X. e# K @ end;, |' g* e8 R2 A) P% D4 n$ H* {5 b
如果分支比较多，用：9 z7 V( V0 B) f. v) @ z
inspect <expression>8 h0 U3 T$ g3 H6 g0 ?: a" ]9 }
when <constant_list> then: p# l5 H4 d. s
<statement sequence1>;
8 \; O1 F- v8 l: H$ H- R* [ when <constant_list> then
* F$ m v# o. u0 j' b: ?6 J <statement sequence2>;
: d$ U, p% ^- t$ Z9 ?9 u; j ...
; w! ]; [" T& k$ a; L0 Q1 ~ else
5 @& J& @0 h) V+ f( M X: Q <statement sequence3>;, J) C& L9 X5 Q5 r' U. ?
end;+ Z7 C( y) ^, r
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2循环语句1 a5 Y, D# F1 M
(1) from <statement sequence1>" Z! ]# U: A' s2 R4 }
until <condition> loop/ x- j/ O& \$ \) z
<statement sequence2>;
* [/ @3 J# _; G, }. x0 g# R+ }) M end;$ @7 ]- W8 {7 @; K% b0 ]# h% X/ o
(2) while <condition> loop0 L* h0 t5 ?1 c0 t4 p
<statement sequence1>;! ?: Y# \3 X3 e- g' j" ]. J( p8 ^
end;- F1 c8 B0 o* K$ S' r/ B+ Z
(3) repeat ) h9 E* G+ d+ m' V
<statement sequence1>;
) _4 j+ ^+ [) R0 X; S until <condition>;
, j" @* g h, O( p% x4 e (4) for <condition> to <condition> loop
. Z) ]2 N3 X% x( O) x, g. q <statement sequence1>;$ b6 [, K, i6 H- S8 N
next;& d- p. Z( x8 D8 Z+ i6 y
3中断语句
4 ^- z: |; ?3 E# V; t' G- D6 I: e waituntil <condition> prio <integer expression>;
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以上为常用的函数！) {; c( `. e7 W7 @3 {7 c9 L3 V9 Z6 f
还有很多，如有需要我把资料发到你邮箱里 2 {" ~, c$ a' u* g5 |
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