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发表于 2012-11-13 08:48:12
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1判断语句
: I0 m. p9 N8 s# a# _$ [! n* [ if <condition> then
# g: N2 ?0 l% R7 m0 s* ^3 Q; s. j <statement sequence1>;" k @4 h5 u5 N0 X( O5 S4 s
elseif <condition> then
7 Y- x0 g7 i/ Y8 f1 g <statement sequence2>;' j) E2 l3 B/ W* X- v2 p
else
( \9 Q N7 S) S) T <statement sequence3>;
" t' R, ~" ]$ J; C1 }: \ end;
) K6 T! T- ~" E3 a如果分支比较多，用：
) L9 G* `, ^2 F- |) G& d inspect <expression>
* C( Q/ Z' A& L when <constant_list> then* }; h8 J2 l4 x: J$ n0 U5 ?3 L. i7 d7 x
<statement sequence1>;: N" D+ _4 H; q1 ^. _0 A8 u2 T
when <constant_list> then
- n3 m3 @: |8 R0 H <statement sequence2>;
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else
2 ]8 X8 q3 O" Y* @5 n* L <statement sequence3>;
. f4 x% ]5 G7 e2 D. send;" ]8 }0 t; h9 g- N2 a9 D: s
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2循环语句
2 |$ H" t! c, O" U& Y' V" k (1) from <statement sequence1>
3 W6 |' Z' y! x3 j until <condition> loop
- B# t" O, @* r. i4 C+ ^0 A <statement sequence2>;4 q1 H; h, J. ? L# t1 a+ x
end;6 c% m$ a0 V9 a0 @* @* s& W
(2) while <condition> loop9 i- ~, e. N+ O+ |7 L( ^3 i' e% k
<statement sequence1>;8 N! ]) t" W P
end;
( e7 Z8 L0 R7 ] M# O (3) repeat , E" Z) X N" U: v( u1 k- B5 N
<statement sequence1>;
$ Z# i8 Z6 j0 w M- |( V3 D until <condition>;
& Y. q7 {" {! `* Z) f: t* Q3 G& v (4) for <condition> to <condition> loop
: C( C+ W" q# q1 g& t) w9 |( ] <statement sequence1>;
/ |3 W: ]& D: j, F next;
3 p% l: d! }4 ]8 ^+ O* t, j2 w3中断语句+ w$ [8 Z3 V7 ^& g
waituntil <condition> prio <integer expression>;
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' C; u7 x- G: ^" p! m& \, N$ w以上为常用的函数！
4 @% h7 Z6 ~! W还有很多，如有需要我把资料发到你邮箱里 8 H! y/ [% n- J5 |7 J: _# J
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