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发表于 2012-11-13 08:48:12
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显示全部楼层
1判断语句* Y, _- h0 Q! ~+ [) Q- D$ u+ V0 @
if <condition> then
, D. g, J$ Q$ i$ v" _( a <statement sequence1>;
5 q/ j: _; \. N2 t, b9 ] elseif <condition> then2 }& q( S5 d/ k2 w7 G6 c% n/ k# P
<statement sequence2>;7 h. Z; q; r, G7 V3 p
else
, S3 c6 a' W& y# ^3 a0 d! i <statement sequence3>;' s/ U/ Z# C- k7 h9 J+ e1 z7 S
end;
+ Q/ u( ^, J6 B0 J+ B如果分支比较多，用：
: ?6 u3 y9 U$ O$ F inspect <expression>6 w/ R2 n3 ?" z1 b
when <constant_list> then
* N J: x0 B" _. e; I6 r <statement sequence1>;* W4 T/ }: l5 I. `, G
when <constant_list> then
/ y8 A) m y. ^) D4 H5 B <statement sequence2>;1 ^2 m1 F" d% \+ o1 O4 Y% _
...
5 s1 c1 I, D/ h$ W4 ?4 z/ U* q: R else
, L# S# E) d2 {- O1 \/ @4 g M: Z" [ <statement sequence3>;9 J1 v$ w" g- f
end;; O' F+ `8 P3 N; }, _3 U
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2循环语句
X8 b% Z( G+ Q$ L (1) from <statement sequence1>% H; h' D) q% ~0 g( u# t
until <condition> loop
. b( h8 p5 b# i: L5 b6 _3 X <statement sequence2>;
% T( |2 f- P; W4 a end;
# H1 d2 N) }& I: T4 Z& H2 ]! p (2) while <condition> loop" s h$ }9 o" i6 N% N( T
<statement sequence1>;
6 i- H% \# I( B# {) @2 t7 e end;
, J& W5 L# X7 X (3) repeat ! O9 ?) g/ A7 }$ ?# @0 v3 J- [8 l' E
<statement sequence1>;# H M9 L3 g% y' H. u: C8 D
until <condition>;) \& ` X- _/ |6 R, ^: l; X2 z
(4) for <condition> to <condition> loop& @% ^$ i6 ~# k7 M! P" b0 M
<statement sequence1>;
, e1 |5 f2 ^0 y, u: D$ y next;
3 l, l' B" }$ x8 h7 V' U" |2 z# t3中断语句
4 H5 h( h4 l8 q$ a waituntil <condition> prio <integer expression>;. @, L" j- c' n+ C
5 |0 c* _. T) P/ Z2 u% O' Z+ Z& l2 v+ G3 Q5 k
以上为常用的函数！- h: q' b7 ^9 I) y
还有很多，如有需要我把资料发到你邮箱里
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