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发表于 2012-11-13 08:48:12
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1判断语句
( f9 v; D8 X- m4 B( O3 w$ I7 m if <condition> then% ?. k6 _$ K+ ?4 m) G9 o
<statement sequence1>;
" f+ f6 ]% E: Y' [' b elseif <condition> then
5 Z& _8 K6 |7 u. L <statement sequence2>;7 @8 v" s: g) @$ V! C7 |
else
2 G/ h e1 K" D4 H3 V B <statement sequence3>; K+ @3 Y j9 Q' @
end;: O1 G9 `! w$ Y
如果分支比较多，用：
5 s _/ }" i6 E% E- ~ inspect <expression>
1 m l) |. s& V+ o when <constant_list> then* V7 i5 H h) h/ I% h6 v
<statement sequence1>;; t$ X1 F5 G5 K" ^
when <constant_list> then4 B G7 b# F& x, I" Q
<statement sequence2>;3 ^5 y: B$ Z6 D$ q* o3 K6 J
...
7 W% D/ D& W" V. ~9 ~/ H3 B else
0 c# q# |* p9 I <statement sequence3>;+ G6 a1 C/ k3 i! Q# i3 D
end;' b+ R3 Z; S1 I! x1 \
- j" `7 q' a" E' e. c P2循环语句6 F, n3 L0 [& i- V
(1) from <statement sequence1>' M: l9 `( k1 J. c- K- S
until <condition> loop0 ^, D: d* N7 T
<statement sequence2>;) o5 }! u- d1 Q6 n5 h
end;
% ]: J! ~5 H5 c% `# j! F (2) while <condition> loop
' ~5 F. ], g1 C0 o- ^' p2 D: j' g <statement sequence1>;
! F, [1 a$ J7 V end;+ q# T5 C' z/ I
(3) repeat
$ c P r0 X& D3 U- w <statement sequence1>;
5 n' \9 v3 y* C: l* [ until <condition>;
; f7 H* a+ P( Y0 D+ z3 h1 B' } (4) for <condition> to <condition> loop
7 [! A7 t! t; l }4 \ <statement sequence1>;. J; B9 X9 k9 A* m9 |" Z, g
next;
; p5 F! ^2 ~. d3中断语句
* h% G$ L' Y7 @7 p) m! G* i/ Y waituntil <condition> prio <integer expression>;! D$ a: t' k8 C
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以上为常用的函数！
& g" `# o* P! U, c9 g$ w6 c& V1 K还有很多，如有需要我把资料发到你邮箱里
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