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发表于 2012-11-13 08:48:12
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1判断语句/ X2 r- K1 |; B Q$ I
if <condition> then
$ h1 Y c% l6 W <statement sequence1>;8 x& |/ V8 X5 z! T2 ^
elseif <condition> then
. E2 L" h" ]4 d) Y+ J <statement sequence2>;! W2 _/ A6 Y2 ]$ e% |8 B5 x
else
8 O% Y1 ^4 Y7 R% Q- o <statement sequence3>;
( j0 _+ `: b, W6 w end;' y" h, X( W1 l* V9 f: F: U& Y& p
如果分支比较多，用：) \& N) p5 \" D3 ~; Z1 d% n8 |) b6 s9 v/ v
inspect <expression>' k* h/ [; V- m v, @
when <constant_list> then# C) p' t7 z+ T( W6 h0 ~$ B' q `3 i
<statement sequence1>;- W, B9 @+ G' N
when <constant_list> then7 w& H! j; Z- |8 S
<statement sequence2>;+ W1 T8 q+ v! H& T6 p" j6 v( U
...
7 _) b, _1 a* o* H* L6 u else
' m* v c b `( U. {8 W <statement sequence3>;! r- P+ l# V) P0 _
end;; \, ~1 f% e" g) _
! U' v* T& n k/ M2循环语句
+ L& x+ B; {7 h _7 O, ]5 \ (1) from <statement sequence1>5 Z/ ^& z" U7 E
until <condition> loop9 k, ]: \6 }0 h Y
<statement sequence2>;
; U: E4 M5 Q7 \6 L* I end;
+ z! m, k; J* ?3 |! _+ w* l: h (2) while <condition> loop
' S' o3 v7 d' m1 O5 s <statement sequence1>;
+ r- W& v2 j, @. ?+ H+ Z. M1 P+ j end;- Z9 {( K( m) i& T [
(3) repeat F( {4 O4 f' b+ i
<statement sequence1>;
- X! ^% l8 l% m* n' b6 z until <condition>;5 ^+ R+ s8 R' u' m9 j/ m
(4) for <condition> to <condition> loop
* s1 T$ |" [9 R e2 s5 _' P% V+ a2 w <statement sequence1>;# w6 P/ ], H! l7 S
next;
# O: \$ k. U$ N4 } X4 F; z3中断语句
5 ?1 {: K" b" o, R. ~) m9 D waituntil <condition> prio <integer expression>;
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以上为常用的函数！
4 ]5 m* V4 y! f, Q还有很多，如有需要我把资料发到你邮箱里 1 ?) B7 ^3 o1 ?: V) V" P% q
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