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发表于 2012-11-13 08:48:12
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1判断语句
0 ~8 \& i! l+ Q$ Q7 S: C# T if <condition> then4 V; I3 B; }, ~4 J3 h! l* C
<statement sequence1>;9 ^3 |: [$ j3 @ x+ Q# ~
elseif <condition> then- F N4 W1 [2 E
<statement sequence2>;" s+ J/ P8 f; g: G+ I2 y6 q
else
, v( r6 }5 |5 n3 b- W <statement sequence3>;' a3 Y( [, ^) R* @6 D ~1 ?# J
end;
5 W- y5 Z$ `4 V; G+ [- ^' o; T如果分支比较多，用：
: w0 w# l* h% _$ \6 l/ H+ z inspect <expression>/ s0 _. b: y9 [; B* @ g
when <constant_list> then
3 R/ V' b+ f" M <statement sequence1>;% K& X& h- F0 A6 x& V
when <constant_list> then+ [6 |' w; t" o3 e8 Z
<statement sequence2>;
, J& f0 H! B5 ~+ t5 C+ M. z! Z ...
& X; Q' u- [' q) M else
7 Z% f2 A3 V* N& d" ^! d <statement sequence3>;
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2循环语句
# U! T" r6 E3 \7 ^2 S2 h1 q# O ] (1) from <statement sequence1>
7 @: c Z$ k* R' o/ @1 ?( w until <condition> loop
0 G3 B1 _& \0 l <statement sequence2>;
% r9 }$ r4 _! J+ O' ~" v end;
2 k; `" t3 M. j; T, v* T- Y (2) while <condition> loop8 l3 h8 d* l* A0 _( Z7 W
<statement sequence1>;
& S% V) z& G4 R2 W; g* j* G end;6 _, D7 j& m* b
(3) repeat $ e3 v. d1 K( d2 \. H$ X
<statement sequence1>;' O. Q' r% K/ R$ @
until <condition>;
) l9 X* a4 `% @5 Z9 o (4) for <condition> to <condition> loop, z5 R( y# ~( M* I
<statement sequence1>;
9 S* i% Z) t' ?# g" T, E next;5 H6 I: k" T& X+ a4 I# y4 I
3中断语句 ]; Q& b. Z9 y) o1 I9 u
waituntil <condition> prio <integer expression>;& \1 a# Q7 F& H I9 |- r
* ?8 Q# M! Q% J% j
( p0 e" b2 M5 M0 g$ y以上为常用的函数！8 f2 r3 W8 \, s$ R
还有很多，如有需要我把资料发到你邮箱里
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