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发表于 2012-11-13 08:48:12
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1判断语句
( S R* L* m2 S; e6 ?% D if <condition> then6 ?2 v3 Q. p5 S8 [
<statement sequence1>;# j6 ^. v. I1 K( V( g% M3 Y
elseif <condition> then
* {; G' U) N) N( d; ~ <statement sequence2>;9 t) M/ W1 z: B1 T6 C
else / c7 j1 F$ [7 ~1 q8 f5 ]" O
<statement sequence3>;. V% P- \4 u% |. j+ F" z, F
end;
3 ~ i. C1 m4 ]7 T; S5 R如果分支比较多，用：
$ `; K- O( G' B inspect <expression>
' y6 {% C8 ]3 g/ f z; m& b. Q when <constant_list> then
4 G9 `. P* b. e; w3 j <statement sequence1>;# w8 W" W w" v' I
when <constant_list> then" J5 v6 I& d6 e, h3 @
<statement sequence2>;
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else4 p9 L1 A$ r% M+ ?
<statement sequence3>;
* K ^$ J0 N, Rend;
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1 ?( r4 t0 l! N1 Y2循环语句
$ M" m q2 ^% F ?, J; n4 E! L (1) from <statement sequence1>
: ?- s5 V* I9 [5 W7 h! T until <condition> loop% p2 O& `( i7 Y6 ]( f3 z
<statement sequence2>;3 i0 k1 [$ X3 N
end;
* ?5 Y1 i# E4 q4 e* |; c (2) while <condition> loop
# f. H9 A9 e d3 M0 {: c. ~4 ? <statement sequence1>;
Y5 R3 u n8 d1 m+ V end;
0 r% e4 ?) W3 q (3) repeat 6 d# q- S. p: ^1 X5 v5 Y$ M
<statement sequence1>;7 ?5 N- l0 u3 ?. v! g) o0 |
until <condition>;
4 K k* v8 H) k; B (4) for <condition> to <condition> loop
2 e' C+ q' M' n <statement sequence1>;1 N8 E8 N3 N% Z0 n& A
next;
% ^) E6 z# Z4 Y8 ?; s6 V% Z3中断语句+ r. r+ n4 N4 Z3 z8 D
waituntil <condition> prio <integer expression>;
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以上为常用的函数！6 r7 o$ z$ G E7 t
还有很多，如有需要我把资料发到你邮箱里 5 U% F% ^ \+ E& [5 }: {1 O) ~
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