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发表于 2012-11-13 08:48:12
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1判断语句% T8 y% z+ u8 F& K- `) y" ~7 H
if <condition> then
3 z% z/ c; C! p; ]. A <statement sequence1>;
- r2 K8 L) ~7 f/ `4 S' C$ ^: n) T elseif <condition> then
7 [; f8 O* |3 S" i <statement sequence2>;1 F2 s: R# o/ p" d* |# U
else
4 y# d+ s& @+ r, f <statement sequence3>;
" M3 @/ E3 M" h! ~ U8 p# M6 l end;
3 Y Y: u4 Y6 p n5 [如果分支比较多,用:
* R8 l1 c7 n* ?4 Q1 v6 G0 Y: X inspect <expression>" A, J- y3 R' j0 W( o- n+ O8 c
when <constant_list> then
* v" b; E: m& R3 A ~' z <statement sequence1>;
) _! |, u9 P4 y. J, K# ^ when <constant_list> then/ B. y! G* i3 F9 W" i0 M
<statement sequence2>;: h0 _* I3 [' Y
...( O4 c( R; h& l
else3 S, g5 T$ N- K9 ?+ ]9 j! }: D: j! c
<statement sequence3>;
3 f7 `+ [! {8 a" H7 `8 u: y/ xend;- ^5 J+ ?+ z" V/ Z
: U) {) x# w; n2循环语句
2 i. h6 T5 o4 ]5 m (1) from <statement sequence1>7 D/ @: c9 ], N7 A9 |. ~* H& o
until <condition> loop( J; v" b# D' W; l8 O7 c
<statement sequence2>;
' _% } u% u, p- }/ B ^% C end;
! b; J0 `! d$ G (2) while <condition> loop
/ Z4 b) _- F! e4 F3 ^/ J: d5 l <statement sequence1>;
& F4 x* B5 N* [1 ^/ t5 D0 w end;
. t, D0 n+ _" S, i: M8 ^/ a (3) repeat & M; w, a! V' Z
<statement sequence1>;
% n t( B2 u- r2 I6 A! V until <condition>;
2 o/ C8 a3 ~$ g( W. ] (4) for <condition> to <condition> loop
' f! b: q2 \- V+ Y' ? <statement sequence1>;
. @+ M8 i7 f+ F$ C) m. ]/ d& L2 ] next;
) e" z- |8 w$ W; d1 z( [3中断语句
% q8 W; n1 \0 i3 z( l A) a4 n waituntil <condition> prio <integer expression>;- Q5 _0 y7 k# r; J1 k3 ?. y
& H" x* R c( F. e" l3 o a: x
9 c$ I2 |' ]) w6 }& \4 t以上为常用的函数!
+ U; d+ w- k K还有很多,如有需要我把资料发到你邮箱里
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