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发表于 2012-11-13 08:48:12
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1判断语句* o3 I7 f, j* z8 Q( ^
if <condition> then# n0 T' p6 L3 p% u
<statement sequence1>;4 h. s K5 M* ^5 ]1 h/ U' c3 j
elseif <condition> then1 ]9 O* `/ x% X4 d/ H& U
<statement sequence2>;
0 j1 S ?0 r& }' j0 a1 O else 5 ]! r) P3 N- d! f; [1 F
<statement sequence3>;
- p" x8 O" d7 W1 M3 i end;
2 n* e, p; A, R如果分支比较多,用:
! R! M9 g! x2 ?" E8 W# v inspect <expression>
3 E. g* J: q; a when <constant_list> then
0 b7 I/ P5 J! v) G4 E <statement sequence1>;
8 C% S- k6 z! h7 T8 y when <constant_list> then7 K ?* j9 A5 K* O5 [. r+ s
<statement sequence2>;; y% e" D7 u9 A
...
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<statement sequence3>;* s* s2 {3 u* g7 f
end;! g# a2 y# ?7 Z9 }4 d% j$ G) o
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2循环语句' y. ^9 Y0 Q; E, {( }7 ^
(1) from <statement sequence1>9 ~: `9 \7 H% V( K, @
until <condition> loop: U7 j0 C, Y$ N
<statement sequence2>;
7 m/ v4 d v7 y, O end;
+ \) d1 |& O# s4 @ (2) while <condition> loop
1 y6 S$ M& [" a, u8 B <statement sequence1>;
# r1 X7 I6 c W: F end;
6 A- k# N7 f7 l" c. \ (3) repeat
. F& z$ j8 b; U" W <statement sequence1>;
* s! b; [. |: K) S7 x2 B/ A' u1 c until <condition>;) T# E$ M: E2 N, Y" m1 o+ Y
(4) for <condition> to <condition> loop
5 B8 C8 |6 ^' b" ] <statement sequence1>;4 L$ [. w: P4 X8 I% S$ ]: M8 q1 {
next;
7 B- R- D3 f3 o3 e, `0 N7 a3中断语句, S- n- W5 A: n3 e) {2 I9 t
waituntil <condition> prio <integer expression>;$ r V1 |- f9 j% A8 u
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1 J4 r: W8 _6 Q' k. ]以上为常用的函数!) q) o/ e- Y* N4 S* t& n
还有很多,如有需要我把资料发到你邮箱里 + S$ i& v) O+ O. T# ]: g: H% z
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