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发表于 2012-11-13 08:48:12
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1判断语句
& C$ O3 U/ M0 K3 c if <condition> then
) E+ Q: I2 e8 Q" o$ V! J: t <statement sequence1>;
4 V, T. g k v elseif <condition> then. l& S5 @# [6 [) r3 q3 V. S
<statement sequence2>;
3 U9 n: e3 F2 I3 B7 z else : _5 P2 O% l. c' i. ?
<statement sequence3>;
2 B+ _4 g" q, t4 _+ w end;% D# K6 u6 u6 b! Q) m/ N! o
如果分支比较多，用：
0 t; d6 a& O& W# |! A inspect <expression>
% }, V( \2 A8 u9 r+ c) c* b when <constant_list> then
! L7 n4 O, O. L <statement sequence1>;
5 r/ V1 q" L0 b' C$ n8 e7 Z* H- J- p when <constant_list> then
+ ]1 [* \8 t7 } c0 o* C/ Y/ E <statement sequence2>;
" i) `/ E4 _$ @' ? G ...
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<statement sequence3>;' W1 x, _* [- {8 j
end;
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* }3 P! s9 ]8 O6 u* R1 a (1) from <statement sequence1>( S& `/ |* D i
until <condition> loop
# n( N; Y8 `$ S1 t9 D" f0 R6 |( n" U6 n3 { <statement sequence2>;5 L9 D# V: z6 N8 g3 }7 t" @" L( f5 o% l
end;7 A8 J! H) M! U4 @
(2) while <condition> loop
' z p4 c4 N0 N! Y <statement sequence1>;
- E* ]( I! J) _% _0 X* p end;
1 w- x5 m5 o$ b (3) repeat
: T$ Z& v/ C* T <statement sequence1>;3 M7 d( j3 Q" I, \% y& M$ Z z
until <condition>;
0 s1 Q" D1 X, L& ~8 t (4) for <condition> to <condition> loop
+ b$ O2 T5 X; k; V7 f* y& E <statement sequence1>;
: D+ M( ]! Q3 u: B0 ` next;" e2 N. A* f6 }
3中断语句
+ a2 [: P; V3 s waituntil <condition> prio <integer expression>;
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以上为常用的函数！; U" b. j }# E' ], K$ M% [
还有很多，如有需要我把资料发到你邮箱里 . n! j& R! e0 B3 v
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