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发表于 2012-11-13 08:48:12
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1判断语句* A; I+ Y7 W/ S$ U: i' h( C: p6 g$ O
if <condition> then$ w5 B4 ?. b) t/ k0 c3 p
<statement sequence1>;
- L/ o0 I3 M2 u: T" q$ y elseif <condition> then
, A4 f, c# h A( b* q <statement sequence2>;
0 a: L0 ?; R( l+ r& H" K0 V- K: k else * E' J2 i* I, K( M
<statement sequence3>;
& O: ^7 R) Z; W end;8 f- f# a& M C9 V! V
如果分支比较多，用：# A3 q c+ F, o
inspect <expression>
/ v7 `6 \- q& ^1 \9 U+ u) i4 a when <constant_list> then
) }& e" @- a* D$ h' w5 Y <statement sequence1>;* f2 X# E9 k6 z5 G- B! W
when <constant_list> then' U( L' A8 F G/ E2 w0 ]
<statement sequence2>;
* S/ G) Q2 u+ @8 H @ ...
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<statement sequence3>;, g& `5 b% e" Z. |& n+ r
end;
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5 d) y* d* x! @2循环语句
; t" y( s8 } i+ W& F- t" k, ?: D (1) from <statement sequence1>; @% W8 P' {8 X) g: {: n- v
until <condition> loop5 P4 U* @5 G0 \
<statement sequence2>;
% M1 N2 Y8 B9 @4 t1 y end;# l1 T3 o+ W0 D: w) K$ G l9 W
(2) while <condition> loop
$ U# E ?9 _- i" i) w5 w+ F+ w <statement sequence1>;
. ~1 O; o+ H6 R$ Q! W! Z0 \( u end;
8 J6 [4 y& g4 e0 O (3) repeat
8 r! _; n+ b/ K$ M+ C# l0 G <statement sequence1>;
# B5 T0 @$ P5 D' g8 u8 r$ c; l) B1 s7 Y until <condition>;
& P! D0 O$ n( D" m2 ^' f4 l (4) for <condition> to <condition> loop Y9 r8 y, y, o! G+ b
<statement sequence1>;, Y2 F5 y& t; l0 y$ C* H% x0 }8 C. [# b
next;
- Q& f; F- \, [5 H0 d- U* g3中断语句
6 g$ ?* y% ?* a waituntil <condition> prio <integer expression>;
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) j) {: }: J$ F, z以上为常用的函数！( m* O7 ]: d6 D: N T
还有很多，如有需要我把资料发到你邮箱里 ; K- L5 Z# v) o" z
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