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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
0 m, P4 b, K: ^* v5 |! @& C6 { if <condition> then
$ z* D, }/ b: I* i <statement sequence1>;# V. [- r5 Q" a: C' Z( Z/ G5 K) n
elseif <condition> then
' P+ }! _( X0 @8 c <statement sequence2>;
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<statement sequence3>;
- H, P7 Y$ ]& n6 P- f( @" M% e. `# J. } end;
, ^9 ~& o+ `& i0 c' I% X! |如果分支比较多,用:0 p7 g1 \! m7 g" [ M/ h9 G4 u
inspect <expression>8 N( w6 v6 v k2 L/ h! a0 i
when <constant_list> then! `5 X+ N: m: [& L" `* ]' v4 u3 J
<statement sequence1>;
3 Z( Y/ h [* o9 a6 p when <constant_list> then& {- H0 Q3 a+ @# }2 ^4 e
<statement sequence2>;; }8 z9 X- r* N/ H, h" j1 ^
...8 i: N- K( @9 O& P `
else
% o5 b9 |+ H* h0 u) R0 }' L2 y <statement sequence3>;
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5 y# N% k( K$ x/ ?3 C& m2循环语句
8 }+ r0 A; Z& e' Z3 n( v (1) from <statement sequence1>
6 r0 S7 U' L% g6 z8 D9 Y) `2 F until <condition> loop" t8 d4 \/ y. l/ U { F% E% h0 K; J
<statement sequence2>;
! @6 C$ u* p7 ^! R9 ] end;
9 D* I0 {& T6 }/ i: t (2) while <condition> loop5 l) J$ H6 N/ t( P% T( J
<statement sequence1>;3 D; W1 @! P Q$ V) b" i$ A
end;% [5 O- I, y) ]8 n, g6 ^
(3) repeat - l2 I4 \! a S4 i
<statement sequence1>;
2 @& @; ?. y$ y2 G- g2 { until <condition>;# C8 q, E$ G5 b, n S
(4) for <condition> to <condition> loop
; J3 I. L5 _+ H" O1 c8 T <statement sequence1>;' E0 ?% O, m- L- q$ L" y9 U0 X
next;
+ q; B( P- k) {" y+ A3中断语句
* C" H. c# l$ k( g3 {/ e waituntil <condition> prio <integer expression>;6 n7 I7 s7 i0 @5 R6 f7 G
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; f2 w7 \% _& s6 y5 V& c( }3 M7 ~3 A以上为常用的函数!
9 k, R0 u, N" Q" F+ L( c' ]: P还有很多,如有需要我把资料发到你邮箱里 / g' o i2 l) M* D* U% V
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