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发表于 2012-11-13 08:48:12
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1判断语句
9 [- I8 C+ A/ q, g& x0 m! j if <condition> then S1 Q& Z" Q3 f! _* P" g
<statement sequence1>;4 T# N) f; f0 w: G) Y8 {, ]9 @
elseif <condition> then/ D- W0 U2 g# S' t
<statement sequence2>;
& X/ I Y0 Y/ f( { else
0 q8 j3 d9 X: ^, ?& O6 E <statement sequence3>;
5 X1 ^8 S7 W- K: |* \0 F7 u! B end;( C. J, G& Z2 C$ d$ D8 z
如果分支比较多，用：
- t' Q( x9 w5 a* o5 l* O" N! z inspect <expression>
% c) }9 e5 f% r, @" s when <constant_list> then
: ~) ?- ]+ i3 y+ Y. D2 ` <statement sequence1>;) E, {! h/ U1 U8 i
when <constant_list> then3 d1 t' g9 p p7 V" |& j, l1 x
<statement sequence2>;; \7 ^0 R2 I: l! t" X# ] k
...
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<statement sequence3>;
( C a2 f& j; ^, C+ n. C& Uend;9 B* D$ K. W1 {9 c* y# x8 e2 C' u
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2循环语句
Z; ]+ @: w; p5 x, \+ m (1) from <statement sequence1>
& B0 l+ h$ B8 V. e until <condition> loop5 ~7 ]' e" ~! i6 I4 t S' {
<statement sequence2>; j7 s, P8 L1 o" w$ Z
end;
7 t1 }; J5 V. Q+ s (2) while <condition> loop& v' f# m, m5 R! b% P# c
<statement sequence1>;1 `; V/ p* o+ D/ Y3 I" p0 p0 z
end;
& G/ m3 L& I5 B3 o. Y* ] (3) repeat
$ A# G+ {+ O# H% b+ y6 b <statement sequence1>;3 L J8 {0 E e3 Z
until <condition>;$ S$ T2 ~ A8 h7 ~4 M" p0 P
(4) for <condition> to <condition> loop
$ ^2 s9 {9 u+ m- r <statement sequence1>;
2 V: u8 V6 c- ~( a' b! L next;
9 z& m) r; g0 s( B, L3中断语句
( p2 T; q, g" K U waituntil <condition> prio <integer expression>;6 o3 W5 v3 p6 A0 L+ w \& M: A
7 K' p' q! @% e# |" ~% w) h8 ]
以上为常用的函数！
% ~4 m8 Y, B4 H) H7 B2 @0 V还有很多，如有需要我把资料发到你邮箱里 7 b' [$ D% F. Y( S, n
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