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发表于 2012-11-13 08:48:12
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1判断语句
2 f3 [, j! P; \; Q. W if <condition> then. M: Z& q3 s- n5 B T2 q c
<statement sequence1>;! K9 a+ Y' ~+ u1 ^3 \ [, t
elseif <condition> then
0 l# d' S" H" D% `& Z3 ?' Z6 s) e <statement sequence2>;
7 L D9 L% E. o3 d. ` else 8 y$ d* ]; w6 p- i, F3 _6 t
<statement sequence3>;+ A0 [$ x# S; _ b' s$ j
end; {- v) ]/ O" [; G
如果分支比较多，用：
/ t& g& @2 K6 Y8 d$ p9 E' y+ f inspect <expression># M% }4 c, I0 B( C& Q. E ]
when <constant_list> then
' O" O, {! K" r3 e0 G) y <statement sequence1>;$ N3 g X: d1 a! ?
when <constant_list> then0 g. P! e& q. c: B- O% d, w; }
<statement sequence2>;0 k8 Y" s, d9 a
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else
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end;
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8 K3 D. z/ \1 N) v3 L# T4 B0 X2循环语句
% R5 V: c$ I& V/ V (1) from <statement sequence1>
a, `8 `; n# V3 Q until <condition> loop
, Q/ F% U4 y) A1 r3 y5 @/ \! i+ q <statement sequence2>;( q# d! _) D: d1 v g
end;6 Q0 G& } A* R* J3 L
(2) while <condition> loop
1 u( V$ T5 \5 V8 |$ e& ?& W4 E8 q( O; A <statement sequence1>;+ ~' T- M9 o! Q' ^! M6 y6 N
end;
& Q! ?8 j: C& ? (3) repeat " W. h9 P9 I% B/ D5 F' [
<statement sequence1>;6 p5 f4 a( q. s
until <condition>;3 \! x) T U# K3 d
(4) for <condition> to <condition> loop- o1 x$ l4 P! D/ w0 M; h- a- Y
<statement sequence1>;, g( q# l1 Y3 I0 g- ?' t/ q
next;
1 z- L' p; Q. |" P3中断语句
1 j- Z' b; b( u1 F waituntil <condition> prio <integer expression>;
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- D) g' Z( F7 W! j, Z8 U- `以上为常用的函数！
0 ^7 F1 l) H X, U! Q还有很多，如有需要我把资料发到你邮箱里 8 Q! {! ~6 W0 |, L: ]% `
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