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发表于 2012-11-13 08:48:12
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1判断语句8 \' O% W) u3 n- B+ n4 Y" [. L
if <condition> then$ J1 j! U0 ]9 f9 S& F; L4 d1 ~2 b3 \! n
<statement sequence1>;6 g e3 O% w3 T( P$ G! q# s
elseif <condition> then
2 J) x/ j3 J( o* h F! ` <statement sequence2>;
% b( W5 H2 _4 Q* N4 L else
7 k$ J/ _& Q8 ~$ W( R <statement sequence3>;9 e" x# t9 W. @, f3 @. a
end;
: \) V, \% S: K4 B* l5 o. b如果分支比较多，用：
! W( `: L8 Q: ]. h0 P, W9 m* @% | inspect <expression>
4 M: F; C' X- V+ j- d' l when <constant_list> then
& i9 a3 I, H0 z' e. I <statement sequence1>;) f+ b: B( g- B" [
when <constant_list> then
7 s" ^$ g5 d+ G! Z: m5 L <statement sequence2>;
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else3 Q8 [4 x5 t% F/ X
<statement sequence3>;
3 y; \! j5 U' s! D9 ?end;/ M* o2 j% c4 }+ @* r
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2循环语句. ?$ e& \! i4 k) n2 U7 L
(1) from <statement sequence1>
2 z& i, j$ T* d5 p& H until <condition> loop
. t P( l3 I8 M* O, l' ^% k* U <statement sequence2>;
: T4 S9 s' P+ h% p; v; a- ` end;
! P# D/ D9 ~5 {* G# N/ B$ b+ C (2) while <condition> loop; v* O6 D! w% m0 p
<statement sequence1>;- l; ]4 ^' R( t; M
end;
; p2 e* _# G, w/ D( m (3) repeat
* R$ `8 \9 l0 u( y* e <statement sequence1>;6 r3 m& X+ j6 i, C
until <condition>;, N( l# x- @! E- R, r2 f1 W& N# H
(4) for <condition> to <condition> loop
8 C: P' H4 e8 e3 p4 ? <statement sequence1>;+ r: N+ g/ d: {. U: X: J
next;
2 Y1 y( v2 f/ ]! B) c3中断语句
6 C; {1 F. U9 p+ k' l waituntil <condition> prio <integer expression>;
* A: Q4 N0 d% [
1 B- J' m% d" ]& F8 g) E
! E1 e# q; J" k) h7 P以上为常用的函数！
- o! ]5 b5 H1 Z5 n# H3 q' w7 F2 x, G还有很多，如有需要我把资料发到你邮箱里
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