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发表于 2012-11-13 08:48:12
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显示全部楼层
1判断语句
; c4 O o4 b* ~3 r; k if <condition> then
. Y9 ]2 z! k, E. s: q; K$ e <statement sequence1>;
' i9 l4 [! N/ F1 {( M! S* n elseif <condition> then! G( Q3 }/ l+ i6 E) g' E/ _$ e
<statement sequence2>;
7 T) W5 D! _7 A else % W% r8 k5 h9 F9 Y
<statement sequence3>;
; p- ?$ o5 K" V end;
0 z( w0 w, ]! [1 I: P9 e如果分支比较多，用：
5 p* h: Y1 `( D: S4 I% b inspect <expression>
8 ^& f. G: N( W s when <constant_list> then
1 f: _# G% V* n' y. ^# d- Z; o$ [ <statement sequence1>;4 I& ?) v1 |5 h2 r3 t$ _+ G1 d/ N' m
when <constant_list> then
$ A% K$ r1 Z G! {! _ <statement sequence2>;: \4 O0 o' p; g6 N
...
& b/ g+ U4 j& v1 v5 |4 p else
2 ]7 a% V. B$ \9 H! ^7 L <statement sequence3>;
8 p: X% ]0 C, X3 K( }- uend;
$ F6 F o, ^( F+ B, C% F/ |% S7 b: A; L" k. ~0 z. |1 a
2循环语句% S5 X1 T! {" t1 C7 F5 Q3 M
(1) from <statement sequence1>
( k. t- Z8 H8 w until <condition> loop
/ L" A1 w* h4 W$ D! `9 ~ <statement sequence2>;
( t l# ^$ z$ i+ L9 p( p2 E end;
+ @9 b& H* q! H* s, @! A) L0 X# \ (2) while <condition> loop5 `$ H! o! W. S# L) b
<statement sequence1>;
* s8 V5 X/ r: t2 x% K0 N( o end;
' A# b& Y! I \0 ?1 d/ T6 F" x (3) repeat
% w5 @( E. P. U0 ~; q <statement sequence1>;
" u7 N# I& a. h, M until <condition>;" W% D2 O$ V+ n+ O" ?: K
(4) for <condition> to <condition> loop. I" N2 S" n4 `& }! X- B; U
<statement sequence1>;3 E8 G/ v6 h8 e8 u& S3 `; N9 R
next;. x* H. ~7 U4 x+ \
3中断语句* N7 j* i- j2 U" J9 p2 L' p; C
waituntil <condition> prio <integer expression>;. P! l+ m, U- m+ B! H$ |0 Y
v% J1 f/ [3 |' Y) \7 e" V
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以上为常用的函数！- b" K$ R( }) u& K. ^5 J* B
还有很多，如有需要我把资料发到你邮箱里
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