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发表于 2012-11-13 08:48:12
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1判断语句+ p/ J! f9 F* S2 ^3 K0 y: {. t
if <condition> then
/ f) n4 M4 r$ |7 [ X1 I <statement sequence1>;* o: g0 j& f9 a; v% ]+ r9 @. B
elseif <condition> then: t+ j O! ?, J2 b4 S
<statement sequence2>;
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<statement sequence3>;
% n7 T4 i: ]8 S/ }' w end;* R0 |, t6 F+ p# |& b# ~) Q: L n2 W
如果分支比较多，用：
/ c( a- x' C F+ z; j inspect <expression>
) G1 s7 O! X* H n, o6 |2 B( E when <constant_list> then
& T' x1 H6 ]' R V3 }4 L# w <statement sequence1>;& t- s8 r; x7 d# H! f, j$ p1 N/ b+ r4 Q
when <constant_list> then
! z9 b' v* S9 G& M6 T3 d+ g <statement sequence2>;3 l7 M; A: S! G( R, R
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else
3 u$ _/ [* B8 j2 S" g' G0 T <statement sequence3>;. I* Z( L* W' s5 _
end;
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% T3 l% i7 k% z K% M% S4 c8 \ O2循环语句4 C2 J% V. b8 O8 L+ l
(1) from <statement sequence1>
% e& m6 c- n9 {% J2 `4 N) z: t+ r4 ] until <condition> loop
1 }( ?. _# F' @) V <statement sequence2>;/ y' W7 m2 f0 U& }
end;; f2 Q: e3 k: @* V2 D d
(2) while <condition> loop
9 I, D" [4 U9 |: A1 i$ k& F& m# k <statement sequence1>;
* R/ c( S( H/ D0 f; ] end;
9 Z3 e& q+ V$ L (3) repeat 4 ? X0 p: U7 Q3 \. e, s: O
<statement sequence1>;
6 v/ b" z& T3 H, U until <condition>;
* l) u# |; Y* h$ b (4) for <condition> to <condition> loop
' Z8 E7 I6 s `: W <statement sequence1>;9 Z5 [+ I& o( f3 C% F$ s
next;
* ~! q# K, q1 S! m3中断语句/ H; ?! ~' i# e0 \4 p
waituntil <condition> prio <integer expression>;
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以上为常用的函数！6 g, X1 H5 ]8 o+ w8 q- _, y/ d
还有很多，如有需要我把资料发到你邮箱里
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