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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2 |" H, s& E) z5 w
if <condition> then
8 q' T, }. v2 B! q4 y6 P( x <statement sequence1>;
+ @) ~5 I$ p1 m elseif <condition> then3 y. k7 a& Q+ N3 N
<statement sequence2>;
4 D4 L1 \9 U. H8 d else : x$ F" G' u' f# \- q" b( P
<statement sequence3>;
2 G' \7 x$ {9 b# V+ l+ m8 k A end;
* E" g; G4 {: Q6 D5 p如果分支比较多，用：
. X$ Q9 i. z: M* o5 F' g4 e5 f: r inspect <expression>5 C& h+ B3 l3 R4 `
when <constant_list> then
5 a/ S9 X6 P: Z& s( @ <statement sequence1>;
, v9 Y7 R0 p) e! @- A# Q when <constant_list> then
1 {# B( Q) g K; A- Z' r <statement sequence2>;' G* \* A8 X6 X. i2 P4 C0 i
...
- h7 l8 K) b, \. M1 [, a" d else
2 G/ v8 I9 r G& ` <statement sequence3>;! B8 L7 F0 x8 E" |$ f# c) U8 U; s8 I
end;
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2循环语句
* `/ M2 D; y& b9 @3 k* b: e (1) from <statement sequence1>
* y- K2 x2 h3 j% T* T+ s7 B' |) M until <condition> loop2 U; j2 `0 _- @, Y" e/ i% \
<statement sequence2>;1 t. \, E$ z0 g$ f9 B, R
end;
( b4 n& i# g2 L- M! V/ N$ L0 X (2) while <condition> loop! e4 J- o/ N& B1 x2 e# C5 `
<statement sequence1>;- i+ u. {1 k$ n4 c# J# m% v; e3 m
end;
: j' y5 J$ @; u8 n) `1 |+ P; N k (3) repeat
" r! p, f5 [( v* |' G$ S <statement sequence1>;
7 @! i9 u# e" Z! y6 n until <condition>;8 f' [/ l+ h+ A4 }: V2 Y8 _2 p
(4) for <condition> to <condition> loop4 n, d7 y, I+ G# i* H
<statement sequence1>;
/ U/ u8 \4 q: s D next;
* \ W# Q6 a+ ]& L$ V7 ?4 z; Q: ?; C7 j3中断语句! k" m2 ^: W# r+ n+ q6 f$ c
waituntil <condition> prio <integer expression>;5 @! }% w1 |+ n& i
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! U5 j7 y5 Q- O. O1 _4 W5 F以上为常用的函数！9 C9 z2 F# @- z- E5 ~
还有很多，如有需要我把资料发到你邮箱里 . z$ Y' ?+ f# V4 B& f
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