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发表于 2012-11-13 08:48:12
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1判断语句
, [# m ?# q" }% Z/ v if <condition> then' Y9 E# B, R) |# Z
<statement sequence1>;
A* s5 q3 ?$ L& C elseif <condition> then
3 h: ^! q6 W0 f1 J <statement sequence2>;" I. f% h1 A0 j' K2 A! ^; c, ^% t
else
l6 R$ n+ ?/ i4 z6 d7 h2 x <statement sequence3>;
6 m8 c# [( Z) n7 I* _1 F end;0 @/ E. S; g3 a7 `2 S, G; M
如果分支比较多，用：
/ s5 w: q" c2 { inspect <expression># E* A8 }, q& M8 i9 T$ i' W
when <constant_list> then
4 o8 M# |& Q9 e* U. o( Y <statement sequence1>;' k. J; {9 _0 b% v! D) t
when <constant_list> then" y9 C+ f8 ]6 I8 E7 g7 S
<statement sequence2>;- t$ ~5 Z2 O* x) S+ [/ p( Y' A
...
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<statement sequence3>;5 s! O# R+ _. T+ l7 z/ J5 k5 F
end;
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2 r% Y6 J9 X% T/ }4 \; h2循环语句
0 b/ g) u7 _& N; Z4 S1 G d) N9 z (1) from <statement sequence1>2 t! x% F7 n7 M
until <condition> loop
8 h" Y7 [& U A( W4 c <statement sequence2>;% s7 K! b/ D8 u9 w& D1 V
end;8 S. P: e. L8 J( L0 J( f
(2) while <condition> loop+ D/ [/ v1 P) y. Y9 E& F
<statement sequence1>;( G9 N( W2 p% H
end;
" O, ?3 {( K/ H4 ^2 Z# F; V; l (3) repeat 7 l, b2 E4 y6 m' f! F
<statement sequence1>;
5 B$ Z& D) s9 ?# A until <condition>;3 k; r1 `( N; n0 T2 H
(4) for <condition> to <condition> loop' U- c2 o- F5 t9 V# H2 A, k1 F X
<statement sequence1>;
+ M: R2 X3 r/ L next;
2 M# M; o4 G! I3中断语句
* V6 G5 S" P1 C1 p& x( x$ ? waituntil <condition> prio <integer expression>;6 ^6 R1 W V2 T9 A& R! O( B1 \
+ u. L7 T! I, o" Y
* ~7 _5 c* V7 m# }1 a& S
以上为常用的函数！
$ Y" ^0 }% S2 g5 i& u7 _还有很多，如有需要我把资料发到你邮箱里
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