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发表于 2012-11-13 08:48:12
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1判断语句) F/ G8 d' r1 E7 D! A
if <condition> then
$ M5 f+ P9 B7 R <statement sequence1>;' p0 W ?) q$ M5 M% |+ J$ Z% C6 ~
elseif <condition> then
, B: ?. z) ?% T1 x <statement sequence2>;) j" g1 i: p+ l7 W
else ; I3 Z O* Y; M2 B: Z
<statement sequence3>;
: v- U* N0 K, z. b. w end;
1 q/ K& G/ b9 b+ j2 \) p如果分支比较多，用：
* Q- C9 B/ _$ ]2 K+ a" K% s inspect <expression>
, k# c1 T! P; I# y0 _; f9 ^ when <constant_list> then
6 C$ z. [2 d a# U <statement sequence1>;. ?+ X1 p9 ~9 d: b7 h7 g. E
when <constant_list> then# [; t9 @& ^! O
<statement sequence2>;
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else! [8 j: K# b: ?* w3 w8 P
<statement sequence3>;# p) y2 s1 Q% W" T8 a$ O: ~
end;, ?+ \' } s4 S3 V! ~/ {4 z
* E1 S& n# G0 S- u" z1 F
2循环语句
: W2 ^1 B: k) R0 N( f+ e (1) from <statement sequence1>
5 }! E2 e9 P: J until <condition> loop2 D9 T; a; t9 e* Y) q5 O# @8 [; d
<statement sequence2>;4 _/ S8 o Q; x- N& c! y
end;
0 y% N) m! @( }6 n (2) while <condition> loop
) {" D- _3 f! K; K7 }3 y <statement sequence1>;
B( T q& B" m" i2 V+ o, d end;4 V* H% W9 }) n- ^( v
(3) repeat ) A j: H0 n! x* Q. N
<statement sequence1>;
& X4 Y6 N% j6 ~1 Q! M( J7 I, c( Q until <condition>;, W$ q5 n1 e6 ~# i6 E
(4) for <condition> to <condition> loop1 |, r7 \) }! M6 O( J
<statement sequence1>;) J4 C. T9 a) N" ~4 O
next;: Q0 H4 C/ c7 e
3中断语句
6 T$ i* \6 I1 n waituntil <condition> prio <integer expression>;
$ p9 G- ~1 y2 Y' R# {& V8 z% l' M8 G: y* D/ `& z: O
7 Q6 W: Q4 }4 O' a8 k以上为常用的函数！
7 H$ w2 _) |5 }; `4 [: Q还有很多，如有需要我把资料发到你邮箱里 2 I% |9 T" v9 ~( N1 Z
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