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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
/ R- c+ W# D! l" l- d0 A0 n3 \8 W% z if <condition> then
. S. v) G Y+ P0 `& a) q; E <statement sequence1>;
4 ?) i) f* A3 u) I. ^ elseif <condition> then8 d! M3 A: d! T4 \. V# r
<statement sequence2>;
+ ?' h1 P' U- W0 N else
) \) t, J& V0 K1 ~ {+ z! Y <statement sequence3>;
; b1 N1 v; v: t+ f' k end;
+ m, @6 t9 T8 J- i如果分支比较多，用：
' Y+ T0 I! S$ b/ Z: `4 H& { inspect <expression>
* c) Q1 e; r7 U" R7 u+ T when <constant_list> then* l0 \6 ^, H6 c n$ ]+ c- V
<statement sequence1>;0 K5 h ?1 A; L* G# m6 Y7 p6 t
when <constant_list> then
. b: U }1 _1 y7 z- D2 q. U <statement sequence2>;
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else
5 K- w- J4 I- Q# P <statement sequence3>;
4 C1 @5 m: J# m. f' E/ r dend;
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2循环语句9 w7 [3 O: q& z/ ?" u0 X
(1) from <statement sequence1>
" g# M) T: W) h0 d until <condition> loop
% L+ q9 K, ~0 b <statement sequence2>;* z, I$ l& V( j6 Q4 ^
end;" P+ I( j+ q5 Z2 A: E' a& F& `! R
(2) while <condition> loop0 C. w7 b5 Q; V8 p+ |1 J' z
<statement sequence1>;" k/ t; L) f$ H% H/ p
end;
5 r* A0 ?, h( O% g; }8 w& u (3) repeat
: |' z1 O8 F1 {, h% a <statement sequence1>;
7 w7 r- Z) T; G3 L6 B' h until <condition>;
1 R3 v" `- A8 j- S (4) for <condition> to <condition> loop) z ^4 R) y( [* P7 R0 Z! C
<statement sequence1>;7 t. } ~( _1 b
next;6 z/ q: `6 h/ ^& P! m8 W
3中断语句* X, Z f& D4 S# _1 z
waituntil <condition> prio <integer expression>;
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以上为常用的函数！7 t; X2 W0 i* T+ ]& F
还有很多，如有需要我把资料发到你邮箱里 6 |" @1 d& o+ a- u' b" G7 ~7 y
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