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发表于 2012-11-13 08:48:12
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1判断语句7 q* R6 {# x6 N T+ h) m
if <condition> then
4 p0 ^( B3 H- v4 R9 r ? <statement sequence1>;
- Y9 O" k+ u9 X/ W8 e elseif <condition> then
2 b0 J; @ v9 \$ d. U( I1 { <statement sequence2>;
: Z" g$ u$ j+ U& S4 t else ( ~- P: b* W$ m5 d) t3 N
<statement sequence3>;
) h0 O: h! Z+ i8 U9 H. t' j3 \ end;
e+ H& I, K' e3 d) t9 S3 n如果分支比较多，用：
3 t, q' K7 |1 y5 v inspect <expression>5 R! p9 e0 W' Z
when <constant_list> then
- b L& v5 q; h; C% k# n* s <statement sequence1>; a$ q5 n6 P% i( P; r: z% O
when <constant_list> then
" z4 A' z9 F8 p* F4 a <statement sequence2>;
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else
# e- C( |4 P% G3 @4 p7 p% l <statement sequence3>;; \. R. G7 z# [' L* H
end;) X9 c* Z) K9 f) I" V" h7 S( _0 f
6 V4 i3 B, J8 @% d4 z% ?& T2 t2循环语句: U. @; ?+ V: ]+ v& V
(1) from <statement sequence1>: ~4 t: s6 U5 f) k' p1 D
until <condition> loop5 N5 j7 r/ ]) x' j; I8 r1 x3 M
<statement sequence2>;9 x5 `, a2 O: v- |- x! m4 `2 \
end;7 S# [9 ?- m5 n) s9 E/ B
(2) while <condition> loop
N. n9 r; F" M" e( }0 { <statement sequence1>;
0 p* ^1 @8 ]: z( {; T end;
- ?$ y5 p( p7 ]4 h% d) w (3) repeat ! W$ ?! g& ?/ l: }7 F% Y& U
<statement sequence1>;4 ^1 K7 N# c- Z4 z) f0 o
until <condition>;
q) j) \0 m7 E- v* }* k (4) for <condition> to <condition> loop) x* j) H8 C& n) b2 x3 ~, U
<statement sequence1>;/ L. @% \* l* Q1 ^+ m6 _& O3 u, T
next;
2 H% t3 ?$ e- B4 c& D! ~3中断语句* z0 G+ S7 }& K& W+ [' P
waituntil <condition> prio <integer expression>;
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; e: D8 ~& P& s7 |$ n4 T以上为常用的函数！8 O1 X- D) U/ l3 F" i- A& W7 ~- Q
还有很多，如有需要我把资料发到你邮箱里 4 s. w) i5 t: V5 C) N2 f
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