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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
$ Q( e& _4 ~3 _4 W. D1 K if <condition> then
2 ?! J; h$ M! s <statement sequence1>;
+ I# \: h2 _# C, q$ q* G& n' F( s1 Z elseif <condition> then
( s* o( P# Y' f F2 Q. Y: r <statement sequence2>;
2 _: q F. g0 R6 q else 4 Z: G: {9 A, F' E4 R4 v
<statement sequence3>;' o. e9 f! ` _5 [- U+ n; X
end;& C# t3 r, X4 Y" ]
如果分支比较多，用：
' t; H2 z2 t& n( a: c3 F: v inspect <expression>/ f- M6 d* w9 x! V
when <constant_list> then% \; A! K, N& t1 m
<statement sequence1>;% i; K1 R8 R3 \( f. e3 p( S5 R: C
when <constant_list> then- F7 G: F% [* P3 W% \+ f& h( [+ M8 ?
<statement sequence2>;
% n7 @ [/ d* j) W- C$ V) u7 j ...* i+ G" i* L7 h! i! i |6 B
else
1 S% U! R4 ^- l% b+ ~) | <statement sequence3>;4 f$ I7 g' N- _8 ]
end;
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2循环语句+ K: \* c# L: n% B. M; G0 u: E8 y
(1) from <statement sequence1>6 j% j% N% k3 c0 j3 h
until <condition> loop
- D5 e# \. A6 I <statement sequence2>;) a- L- F" U$ `2 `5 r3 M
end;
5 u! U9 @, z7 e j (2) while <condition> loop
; Y6 P+ T/ S/ P" |8 D' f <statement sequence1>;
1 ^9 {2 }" B5 \ end;- x% |' o1 p- [ h
(3) repeat
/ U# a& Z" J, @5 v <statement sequence1>;* a4 B4 ~& T- ?3 r
until <condition>;, w- R) j/ f- _7 v; s
(4) for <condition> to <condition> loop' J R) I. ]& c" }. }
<statement sequence1>;
, P4 ?* q# ?0 e' d next;; X+ m1 q0 {; s. r8 Q- c
3中断语句
) H, g: D0 v# k; O waituntil <condition> prio <integer expression>;; @$ e% T6 E2 L
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$ D! m7 p8 b E& k
以上为常用的函数！
$ b+ j* V4 B$ W3 |4 F1 ?6 _还有很多，如有需要我把资料发到你邮箱里 k6 I5 G9 o+ p7 @* q! d1 B- y& |
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