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发表于 2012-11-13 08:48:12
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1判断语句 D! n- A- U% p5 ?
if <condition> then
$ Y, h x- h+ N$ t2 K# K& c% ` <statement sequence1>;! ^, [1 ?# W$ Y$ T8 ]& r
elseif <condition> then. N3 B5 |8 Q4 F1 [2 v1 I
<statement sequence2>;* N( h6 \: c! L8 e/ M
else ( U1 _% P U; ]3 r
<statement sequence3>;- W7 M$ ~' j7 B _+ Q
end; ^. q5 J' p8 q2 O4 v2 ~* w
如果分支比较多，用：$ i1 u" g: i, Y5 ~1 ^
inspect <expression>
0 X9 l$ |9 F$ I2 q( Z! M& h when <constant_list> then
( g/ J! }) [8 l' Z7 O9 T1 ~ <statement sequence1>;; }( z. S- w& R* |" B/ K
when <constant_list> then
8 E0 ~% j a ~ j <statement sequence2>;
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else
& c* B% T p, E& v0 U <statement sequence3>;
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2循环语句
* N: u* U" x8 m! V- ^4 ` x: J; E. q (1) from <statement sequence1>
6 w4 [; @4 {! d$ j9 s1 A until <condition> loop6 d# Z7 i$ e) l \0 z: |
<statement sequence2>;
/ m4 x& x; A" S$ o/ M# e! { m end;
. i+ R$ T# D. [) Z, M R (2) while <condition> loop/ j0 ~% L. I# V/ r
<statement sequence1>;2 k, w% O, q% t. j5 n t- w
end;
) @3 j1 b& P$ G& `& t" B (3) repeat
2 ]% M4 L+ m1 O7 h& G9 n <statement sequence1>;
: q. K3 W6 w% `' D8 X8 b" f' E until <condition>;
% x7 w1 s _ r; g4 Q9 [ (4) for <condition> to <condition> loop8 S; R9 _1 q+ e+ V4 f5 v2 b, t1 n0 r
<statement sequence1>;6 |/ |, t2 g1 o5 R) G
next;
i( ^6 b* G1 k+ y% I2 D3中断语句
+ o. R: T+ Q& e6 k' V5 b, f waituntil <condition> prio <integer expression>;
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以上为常用的函数！
6 H) Q5 Z" c; T还有很多，如有需要我把资料发到你邮箱里 % b# e4 B4 D, E3 W1 u* [4 p1 R
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