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发表于 2012-11-13 08:48:12
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1判断语句
' v0 k' ?5 K0 E& ^; ^ if <condition> then. O5 P F2 J1 A8 H' `/ ^ O) |% J( g: L
<statement sequence1>;2 n0 u& G! S. I# n3 Z5 B
elseif <condition> then! a& m* b2 w' C% [ F
<statement sequence2>;' q4 O6 T: Y# Z6 s7 ?
else
, l& \. {8 }! W$ N3 Y/ a <statement sequence3>;
/ r! |0 V" a( M5 N4 a, j, v" M+ d end;
% g, B4 C9 A$ x( C5 k# A5 y如果分支比较多，用：
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when <constant_list> then
* N: J3 Y( l- [" J/ V <statement sequence1>;
) \2 N6 j5 Q+ o3 r4 e when <constant_list> then& t. z5 @: O' e, X, k" N
<statement sequence2>;
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else3 q& H4 g/ w, ?. y! X
<statement sequence3>;# r9 L8 ~8 y: c! ]
end;
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# r2 x# N, J! ^$ H# d+ G5 o2循环语句. V& k ?1 ~ {5 T
(1) from <statement sequence1>- T w1 ?& W+ T" G
until <condition> loop: ~- ]1 V x8 U& ~9 B
<statement sequence2>;
. \& c1 Q9 f4 L- J6 x3 q5 ~ end;
. j6 y: L9 H$ H! F+ f' R (2) while <condition> loop
, t$ v: I7 Y* p" [ <statement sequence1>;
, K* j# Y; k- V1 C% Z3 n$ c end;8 g B6 Y2 E: f, E+ g3 S8 ~
(3) repeat 3 s, B" V0 k9 @0 f" J% u+ \
<statement sequence1>;
( |: m$ o# i! X$ e! @2 U# q4 j2 H( } until <condition>;* A5 h% ?0 V5 W6 R
(4) for <condition> to <condition> loop" a8 s. _, h- V2 M! y
<statement sequence1>;
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3中断语句/ ^6 @- I1 K, L- d$ d: V2 _
waituntil <condition> prio <integer expression>;6 W N5 ]+ K& | p
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* \+ e' u2 L0 X7 f1 C, n) u N以上为常用的函数！
) a F9 [6 }/ ], ]5 \5 t c还有很多，如有需要我把资料发到你邮箱里
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