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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
( c0 I9 G. x9 V) E6 R if <condition> then
6 Y6 a3 B1 g' ]" ~8 d <statement sequence1>;
2 }+ ?* f7 r$ m' @ elseif <condition> then7 d1 E" I* ~0 r+ P% N6 S/ ~
<statement sequence2>;& F1 R& j: a* X/ N4 c7 }
else ; `2 }* \$ [) a% Q) ~2 s6 u
<statement sequence3>;5 _5 ^8 `2 f' x( z
end;
0 }' i, P6 E+ U$ E0 H/ H如果分支比较多，用：
% i) F4 z1 b4 | J+ B inspect <expression>
3 L9 J% G* U$ d( X0 z$ ]( L when <constant_list> then
; W% \/ l4 a7 |$ x( ?5 C <statement sequence1>;: ?* ~: b* B! S$ G
when <constant_list> then
4 u: }& \; z) F6 @9 i9 v+ ? <statement sequence2>;
5 E3 ]! b/ i0 W' |0 |8 M7 W ...
9 w3 s, D0 A( C- L* ] else; q4 |9 h8 N8 g$ S3 Z8 X. U
<statement sequence3>;1 g$ V: }' t2 P+ i8 f7 ?6 a
end;
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2循环语句: }: x/ p" \5 I' q% ]
(1) from <statement sequence1>
& c6 x- J' l1 K" ` o4 `: } until <condition> loop. r$ f# W4 c* J
<statement sequence2>;! z# b& ]" u) b- H3 t8 D
end;: t* W/ y: U* w- e4 J3 i0 M% N, c
(2) while <condition> loop& b/ M' K/ \5 v2 |% v
<statement sequence1>;
/ H0 b+ [. {5 p, F end;. n6 x( m- O. B) h; r+ ^: ]8 E7 Q
(3) repeat 5 Z7 i+ I9 N0 ?0 I! c( u# o5 u
<statement sequence1>;8 T' D9 W$ T+ Y! I
until <condition>;( d+ _# M+ I3 C3 N5 j8 |+ m+ z
(4) for <condition> to <condition> loop
) E( ^ o$ w1 s6 }) F3 r' a, m# H; \# s <statement sequence1>;4 O2 @( t0 X- h( H9 W
next;* j% L9 M% g' |3 h# _2 [. \9 K
3中断语句
! m) R1 E1 y1 ?7 V* { waituntil <condition> prio <integer expression>;0 ?% I. C8 S; o j% N
/ {2 N! r" P4 B& ^/ u
2 G: [% R, ~9 _7 e& a以上为常用的函数！
d/ j7 i# W ^. I. B8 P7 U# l还有很多，如有需要我把资料发到你邮箱里
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