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发表于 2012-11-13 08:48:12
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1判断语句( U) \- d& [8 H, o; P* j
if <condition> then
D6 u. M/ I5 S <statement sequence1>;4 [0 x- F- z% u
elseif <condition> then/ Y' ^( Z r) k1 V$ \5 p
<statement sequence2>;
7 v1 N5 N# n- e$ V1 ]; |: e else
4 y. s' f: L0 W% b6 ]: J <statement sequence3>;9 U! D; A; f6 \" A, ^7 U
end;9 D6 [ a5 \8 \- t
如果分支比较多，用：2 u8 T+ w }0 W |8 n0 [9 J3 q7 a) r0 t
inspect <expression>
3 t2 X- V9 g' F+ ^6 Y when <constant_list> then% e8 T- k& t! ~ V
<statement sequence1>;
6 N# Z' _" @6 M$ \" Z+ ] when <constant_list> then
4 R0 U' }' c( x5 v <statement sequence2>;$ h" a. O+ L$ V
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else
4 E; B" K0 V7 H5 x: S" D <statement sequence3>;/ ]% p0 a1 ]2 @8 I$ q
end;0 X, x' S5 r- L
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2循环语句- B# ]1 B; E) v- S$ l, B
(1) from <statement sequence1>
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. p/ u4 F$ n0 E( z <statement sequence2>;6 E. r" E T1 ~" z- Q
end;5 X! B9 E! R0 B; i" X2 }
(2) while <condition> loop
. U' `* R4 F. E% r9 V <statement sequence1>;
\- s$ S9 o, F) o0 u0 Q end;
% `6 z/ f. [) a# x/ L( C: Q' q* o2 q (3) repeat
, l: r1 K" C: ~' i. F4 j" O2 e <statement sequence1>;
0 R/ R* E4 m- j0 T+ O! K until <condition>;
3 }. F% N8 [' N& v i! t p* V (4) for <condition> to <condition> loop2 T: n- P& ^ e& Y: f
<statement sequence1>;5 L- I' I$ e+ F: ?
next;
$ ^! g0 D8 h% M' g+ j9 B4 i6 P3中断语句6 a- ]* ?) K) ~, A% l L+ B( w
waituntil <condition> prio <integer expression>;; t8 f, j" d4 M+ N% P, A
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以上为常用的函数！# {+ J% V p: r; Y; e0 O: d7 f
还有很多，如有需要我把资料发到你邮箱里 ; E& l: A: D1 r! Q/ G
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