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发表于 2012-11-13 08:48:12
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1判断语句9 o6 c: u: }% h3 g/ c2 K2 N- Y( N
if <condition> then0 Z9 ~9 d7 s: w. h) B
<statement sequence1>;0 N* N [ K8 B9 `
elseif <condition> then
6 i' ]/ V4 q/ w j <statement sequence2>;' A) S# y/ A: ~) i k2 U! G
else ( n2 a: O, |9 N7 V1 G" Q+ i. U. |
<statement sequence3>;0 i1 ?8 r1 s% N" y( s) j! c
end;
9 `7 Z2 q1 r6 Q2 }% H% _* o8 b如果分支比较多，用：
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when <constant_list> then- \6 g- m, g0 [- o: ]4 x6 g6 x. U
<statement sequence1>;7 D' ?4 }- B8 W8 H
when <constant_list> then/ S3 `$ W1 l. s+ ?" x/ f
<statement sequence2>;
( @+ H9 t, T J; l8 x- @! w, W ...
/ J- }) m" P8 v, m0 | else
% X' f; L3 ~ e <statement sequence3>;" t- \2 }% ^$ _7 h
end;$ [* l- c0 z8 e- |
* W1 y! n) j; x, d( [1 `$ [2循环语句
+ A2 K( Q. {' m0 C0 w D) Y8 X- M (1) from <statement sequence1>
! M2 F' }- ?/ g; L8 q until <condition> loop
3 ?0 o+ {2 G+ P& R <statement sequence2>;, y: s/ `( s3 m0 J% p4 J
end;2 R' y/ I) C7 d6 k1 G4 W: m
(2) while <condition> loop
& D, W9 g/ g) m6 u <statement sequence1>;
" g4 F6 m7 E6 f- ^% O end;
9 K+ Z/ l7 m% S, ^; C( l (3) repeat & e- Z, P6 b% i4 {
<statement sequence1>;; c) E/ D* m& j0 a. q/ _$ c
until <condition>;0 |& w8 W/ h! W% z% F
(4) for <condition> to <condition> loop
7 m9 |) Y6 R Q+ F4 s1 [: D <statement sequence1>;
! b y( W. q' d( ]( J4 o next;
. p+ v- \2 K; Z9 ]3中断语句" y( Q: ]! \. w' T0 K3 a
waituntil <condition> prio <integer expression>;) d8 J0 f& D" N2 O3 _8 _7 l4 @7 s
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以上为常用的函数！+ W z1 Q; h/ {
还有很多，如有需要我把资料发到你邮箱里
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