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发表于 2012-11-13 08:48:12
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1判断语句
}0 ~5 X% a' Y! o$ q if <condition> then
$ g1 r; c& A+ v# J <statement sequence1>;/ U, Z, a6 e. ?" a- z. }% L* I
elseif <condition> then
$ r" O1 c h4 w: ?& Z+ z6 |$ N <statement sequence2>;* k g0 k& f" k O# X) C
else 0 m5 X+ E/ u7 j" v
<statement sequence3>;
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如果分支比较多，用：
" D z# _4 p3 a+ u inspect <expression>6 i. Y; T& S) H$ v+ d, t
when <constant_list> then
9 ^' y" @$ ~/ n& e: q/ B0 _; N6 v <statement sequence1>; S; U }: j/ V) A5 `/ q
when <constant_list> then
! ?2 ^0 O7 B+ J. U% t <statement sequence2>;9 b8 n, s6 y2 d* L( }& t4 s4 D
...0 ^% S2 N5 D( O# @% o& u
else" z3 ]+ ^' y% n
<statement sequence3>;
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2循环语句0 [! p+ V7 T( ~4 I/ z, B" U6 ? L
(1) from <statement sequence1>
! N! Y0 w+ f* S& O+ i until <condition> loop( l# W- d' q8 B" [% {& y8 K9 f( A
<statement sequence2>;3 O: A P% |, s$ C1 i
end;+ q3 L/ Z" s0 A' j5 F, P4 ]' c- V
(2) while <condition> loop. Y2 k. B3 i0 ?% b
<statement sequence1>;+ e' E- m$ X* n- k2 h0 n
end;, {$ l" {1 F' d$ |3 B* ?0 u8 N
(3) repeat
) \. R6 k: W$ g) c3 k7 Y <statement sequence1>;
5 s' ]* m% k: `5 Q" U1 \ until <condition>;$ ~- @8 F) M5 H6 e& D! `$ t
(4) for <condition> to <condition> loop
1 A, C, W& D' s) L3 ` <statement sequence1>;
: i% R& E5 O7 O/ x next;
/ q6 d7 v) K9 f- C5 J. l3中断语句1 b/ s" k- \0 G i
waituntil <condition> prio <integer expression>;0 W. _+ C* R9 k% h9 I% [
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以上为常用的函数！; R) b7 Y2 l& j6 t2 n( l
还有很多，如有需要我把资料发到你邮箱里
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