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发表于 2012-11-13 08:48:12
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1判断语句0 \% O2 _) ?) w, j% p( y; M1 ~. h( R
if <condition> then3 Q6 E5 {; i. G5 O( W" p5 `) h
<statement sequence1>;) Q3 R: ~/ P {8 B4 X) k
elseif <condition> then5 j! Q/ m9 b m1 n7 @
<statement sequence2>;4 `4 R& ]; Q! N# r* n5 _- R! x: ?
else % @1 {7 V. G# V4 G
<statement sequence3>;+ ~( H, M7 p1 Y4 c; v5 N2 q; \' ^
end;
& D/ U0 R4 t0 I如果分支比较多，用：
" {$ B7 h" j( J1 x) v" } inspect <expression>8 h4 Y- W5 i% J
when <constant_list> then
# b' v$ E1 R8 P) G" v' [% R <statement sequence1>;: Z" k2 R2 c( p$ ~2 I, I
when <constant_list> then! Z0 s) d8 G* v$ t1 S* F6 r/ p
<statement sequence2>;
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else4 I% U5 ]* W' B* v
<statement sequence3>;% A/ z; o2 n, I
end;
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2循环语句
7 |/ X3 E2 E+ V8 w* C+ w (1) from <statement sequence1>* c/ M- |+ ]' \* o ?
until <condition> loop4 K3 z Q4 ?3 S3 R, b
<statement sequence2>;
* i+ b: s0 ^4 T* ~, q end;
' F N' K0 w, Y. [4 G* r' b1 q (2) while <condition> loop
7 y" r: a2 [% L0 N3 i <statement sequence1>;
/ L _% ?' C6 J5 J3 _4 E end;
) T. z1 E% ]" @: g* F (3) repeat / o/ f$ r; D1 S. |' A5 S7 C
<statement sequence1>;. {7 u9 O2 ~- q1 v
until <condition>;
. h1 R8 D# ~! }8 U4 ?( y% ` (4) for <condition> to <condition> loop
5 `4 u$ \' G" R( U0 Z& r <statement sequence1>;
7 U( ?! Q8 Q4 S, F9 Y- j _% a next;
1 b" T$ V' n; g9 x9 D! {3中断语句
2 i8 F' r6 ]1 o waituntil <condition> prio <integer expression>;
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& x a2 c+ Y8 f- @0 i以上为常用的函数！- o- D1 h1 ^& Z' A0 L# x; ]& a/ W% F
还有很多，如有需要我把资料发到你邮箱里 2 L) }/ ]2 E( C
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