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发表于 2012-11-13 08:48:12
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1判断语句
) f4 }, i2 d- e) K/ \3 } if <condition> then
( a. r) i l0 j& W <statement sequence1>;3 m9 t: o1 j2 C2 h o4 p
elseif <condition> then% A& P& s0 t. @8 Q3 ?. P
<statement sequence2>;6 ^8 q* w4 T* Q2 p
else
+ z9 P" b) V2 y4 }1 z: f <statement sequence3>;% g1 m7 P+ y# q* H2 j+ K0 F
end; }& q. T d; Z
如果分支比较多，用：0 y% ?; o( \0 j
inspect <expression>9 k8 D' r- m7 d. L& f4 D6 f
when <constant_list> then0 y9 d. I& b8 x' c
<statement sequence1>;
( ]! [$ n0 P6 t9 [9 O+ P5 K0 `4 v when <constant_list> then
) R* l+ ?( m$ L; h9 g* Y* | <statement sequence2>;3 ?: u$ H1 c1 i- O6 b ]+ U
...% Z9 t6 n- q% M5 @! G# L+ t/ s
else
r/ \( {# s, s5 T- F! I <statement sequence3>;. q- ?5 w6 \" P& A, E
end;. ]4 m. f7 K) K- o) r3 \
" i5 v) |5 ^- x) m+ t: i! Q% b+ G2循环语句: T @ w& x& H6 R. v8 l4 P$ t
(1) from <statement sequence1>
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<statement sequence2>; g4 H- h1 v1 s0 `% u5 Q# T$ N* b
end;
0 F; t" s9 Z8 ~ (2) while <condition> loop
) j4 L0 q4 c) {8 x <statement sequence1>;
2 H# z8 v0 q1 J$ D8 t# c: q end;
2 z+ |3 v) d/ H! T! W (3) repeat
: T2 T A9 u: ]8 i <statement sequence1>;
- U+ z0 d y: ?. ] until <condition>;
/ p$ i& q( v" ] (4) for <condition> to <condition> loop
) T& z) g+ S1 x- ] <statement sequence1>;9 x) ^* E1 i9 Z4 j, Z* \- M% x! }
next;/ m' O0 V7 B8 y6 g
3中断语句$ n1 A; e" x- H& a6 A, ]' Y* K1 T
waituntil <condition> prio <integer expression>;
, k* ~ f8 Q& Y- S; V; j/ |( H7 O: P5 z. b' j& G( y
( R* t" a5 t6 W* n以上为常用的函数！
, g4 `2 L5 M1 d还有很多，如有需要我把资料发到你邮箱里 / `. z* h6 D& b, Y$ z! I2 H
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