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发表于 2012-11-13 08:48:12
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1判断语句
( K+ y" a: U0 X- r: C& O' S if <condition> then8 A& _2 U; f1 L
<statement sequence1>;
- ~0 M% `) N/ A0 G elseif <condition> then4 I6 v& l4 o" J: b. k4 o; G
<statement sequence2>;. }, _2 @$ [% ?) @6 ^
else - k/ _" k& [9 U/ d
<statement sequence3>;) A- `% e" v+ W; {& i* W% j
end;# n" \5 K M6 p
如果分支比较多，用：
/ c8 B. o( E2 I6 ]8 s0 |9 G. ~ inspect <expression>
' J, }, L+ R: n, \. G% |) F, j7 o: N; r W when <constant_list> then
; ~- _" g) D* p, f; a8 n <statement sequence1>;, \7 b: R5 M& {' Y& Q
when <constant_list> then7 v% ?- i7 ~: J: T% P
<statement sequence2>;+ X) O8 X4 r- t* I. [
...
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<statement sequence3>;* ^. d: f- r$ y Z' D; B
end;
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2循环语句/ P: B% y: S( W
(1) from <statement sequence1>0 u9 z. J1 s9 c2 ?( l2 U. Y) _
until <condition> loop
" s( {* J! F3 K. U) M3 G& M( U! G <statement sequence2>;
$ G+ x4 q! b* O end;
. @; Z0 C6 N6 F$ p9 `6 S (2) while <condition> loop: _8 K8 w) I5 X7 t6 J
<statement sequence1>;2 r0 B7 M0 w U9 |# R1 l
end;
8 R( ]1 S* ^9 G0 c* [6 I+ \; @ (3) repeat
" G, }7 `* z! W6 K$ l <statement sequence1>;- L, W Z1 }+ r+ E
until <condition>;
7 J! ?8 Y: D! `; G$ o' \( S (4) for <condition> to <condition> loop
3 ^$ ~+ P; z9 ^& ?' B8 n! U) a3 X <statement sequence1>;
/ o. Q: L- ]* e2 @; Y$ r, y next;
6 y3 r9 Y s" {3 {7 L( U3中断语句6 ]$ V; v) b8 G" f& `7 I
waituntil <condition> prio <integer expression>;
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6 z R4 ~, [8 J8 S) z; k以上为常用的函数！" p; `, y- q; F- a
还有很多，如有需要我把资料发到你邮箱里 5 \ T+ t, a5 I3 _6 Y! \3 Y/ L$ \
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