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发表于 2012-11-13 08:48:12
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1判断语句9 A6 y! N/ i. |$ V
if <condition> then
% }+ w4 b8 k% I9 m/ R" {% H% L <statement sequence1>;& X) U$ R& e. ]6 Y6 J$ }$ ]$ e0 O
elseif <condition> then
! {4 m$ [6 z) _" @: }% P# U3 T <statement sequence2>;
! c, X# t9 C0 m0 u+ L% F& w else
) W8 @6 b) C4 d0 ^ <statement sequence3>;# }( _% [* | l ^/ k
end;# ~ j5 S! w8 p; Y4 `
如果分支比较多，用： X1 N3 X, b9 v9 W
inspect <expression>
( Q4 z4 |$ x7 r) \1 `. H( N! _% { when <constant_list> then
. u& o. F, b- E <statement sequence1>;
$ M( c) T' u: d+ D1 G when <constant_list> then
! @9 |, t: W% T5 b7 G <statement sequence2>;
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else
6 T: P, R g5 a <statement sequence3>;
, S2 b5 d5 b& H$ R3 k+ \end;! O: w6 H4 P" d% z( }6 c; j$ _. ^
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2循环语句- j3 M: Z. I! d" j' w5 h* E5 i
(1) from <statement sequence1>$ Q& D1 k; X: T+ @* C( \
until <condition> loop* L' q# N7 d0 G4 c! ^: r( w/ K
<statement sequence2>;
# ^3 ~! G) W4 v end;
1 n5 R! v% W$ K& f _5 Y+ C (2) while <condition> loop
( f9 H% V$ \8 r: G <statement sequence1>;2 X! t& v0 m1 I: b1 i& q' T
end;
5 G2 [5 t1 d3 `. r- m, E8 r (3) repeat
8 v. c* w$ k( w0 q& I3 G <statement sequence1>;
6 t& O# U# v$ d8 c until <condition>; I. A* z6 O) D- f# M) D1 L
(4) for <condition> to <condition> loop
# N8 k0 X6 a |$ k# X4 e <statement sequence1>;
, L8 y3 D8 O1 F9 K4 K5 |4 ~ next;
) h! S! C3 ~1 ]: `4 A5 G$ h3中断语句& h' _/ f: }( a2 g( K
waituntil <condition> prio <integer expression>;: k9 w4 }7 Z! T5 J' e" N
# ?' M( w+ V0 q3 r% i7 [ i) A" e3 m" X
以上为常用的函数！8 @! J: C6 B# j& \
还有很多，如有需要我把资料发到你邮箱里
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