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发表于 2012-11-13 08:48:12
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1判断语句
, Y0 ^. e. d; p' n if <condition> then- j3 h7 U* `. v
<statement sequence1>;
; A Z# W- _; _ c! J. i elseif <condition> then
" f+ G0 _: }0 ^: E0 A <statement sequence2>;
2 R- l3 Q' R+ X3 S7 v% Y' J+ w9 k else # [( F9 X* Q t, {8 X
<statement sequence3>;# u' C1 r1 `3 d5 {1 L4 V
end;
* e& |: L/ k' b0 Z. Q如果分支比较多，用：
' S; `& a0 R( o6 O inspect <expression>
2 W& w+ M$ w" @3 l- \1 x/ C when <constant_list> then
+ P; s3 |# e$ l }% w2 q0 @' W <statement sequence1>;% S3 Q+ |$ X: S" O! S
when <constant_list> then& v8 A: R" b/ F3 R2 b, B& \5 H* c }
<statement sequence2>;
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else
$ f5 D6 w: g+ k8 i- D <statement sequence3>;2 o5 C, S" y. S1 Y( K' ]$ N
end;1 L/ U! { N7 |2 |# g- ~
% e# {- \. z2 E) K7 F! i; X2循环语句/ {* a; j6 x& l5 J
(1) from <statement sequence1>
5 J% |+ U9 l; A until <condition> loop, X8 r* C: z6 q2 W9 m
<statement sequence2>;
3 P4 Q9 X. [, [* k end;
0 }) d! X0 {/ u! ~3 N W8 l* z (2) while <condition> loop
6 q d; f& c" x' `7 x <statement sequence1>;8 K- o4 B9 @ ~3 X4 j, H; O/ i
end;' q7 r8 o% L, F2 z4 N0 g
(3) repeat - k" j- V- l1 m. x7 q2 f) B& Y$ U. @
<statement sequence1>;$ f& e( `3 u F5 Z. q- ~
until <condition>;: E* }" e3 a& N6 [, l; r
(4) for <condition> to <condition> loop
: {5 _, Q/ r' w0 _% b <statement sequence1>;
) |# y1 o6 O F4 h! A+ X next;
5 u; O n+ f" _3中断语句% m; a! d. _0 ^% x& L% P3 v4 v
waituntil <condition> prio <integer expression>;' Q3 A7 F) m7 V: z
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以上为常用的函数！+ d8 [ U3 ]% L& _
还有很多，如有需要我把资料发到你邮箱里 . b, ~7 G& x f- N& [" A8 ^
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