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发表于 2012-11-13 08:48:12
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1判断语句/ J9 ~! r" t% A, I
if <condition> then4 N9 l- g# c+ o5 ?. @5 G5 w5 ^0 m, m
<statement sequence1>;
2 C7 }+ d" l2 k elseif <condition> then
; A0 |" g' }: R( i6 R: ~) B; h <statement sequence2>;
, i3 E1 s2 N$ a( s else
' ~! L" ]$ S9 ^1 T5 J. X <statement sequence3>;
8 ?) Y; C# I' d' l$ a end;
3 K7 @. e4 h8 H# \) d( I4 z如果分支比较多，用：! a- O- W( S S. S! @
inspect <expression>7 C0 {% Y, r: S
when <constant_list> then
$ _$ {% Q. P, l <statement sequence1>;
: q* z4 s- m$ F when <constant_list> then
! h( E) G* V" ]8 \ <statement sequence2>;
2 X8 ^+ v1 y* k! i9 t( h ...
4 t7 n$ ?9 |+ Y- x3 ~; F else( V& _& m: i! a
<statement sequence3>;
, h- i9 F0 h! Z/ n& I' Nend;+ Q- @8 I) u$ e
& k8 I3 c2 z1 w( L d6 g2循环语句' y* s7 J) }9 S6 A7 V% I
(1) from <statement sequence1>
- o- s& g& }: g+ h, ]! V/ k until <condition> loop
4 x* p+ m/ b- h' t( H' K, T& G- c <statement sequence2>;, i" s, V' I5 ]5 m7 b* M
end;
% P, d) X3 h2 ^9 W, Y (2) while <condition> loop+ N+ L! z0 q* a/ ?! q1 R
<statement sequence1>;9 f2 x! K: |/ O/ s. c N; _4 D
end;$ s+ V3 K1 ?# \; b+ c- n% o
(3) repeat
! Y1 R+ H- l/ q. b( y! [ <statement sequence1>;
3 e9 M' v# \) @; U6 K4 a! | until <condition>;# F2 X0 `. r+ F: j
(4) for <condition> to <condition> loop
6 l3 x) w' n4 T& e v <statement sequence1>;
, W- s3 Y ]+ \* r9 m next;3 p7 m8 S$ T- T# c+ _) M; i
3中断语句
) Q3 X: P1 K+ Y) s waituntil <condition> prio <integer expression>;
[. a# i; c/ k# x- P; w+ ^+ y2 [2 v" {7 Q3 q6 b B
0 ^8 W! A( h$ @/ c0 v以上为常用的函数！3 ~$ j; R6 ~/ R" _; o. I
还有很多，如有需要我把资料发到你邮箱里 % V Q+ E- ]5 R, D
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