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发表于 2012-11-13 08:48:12
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1判断语句
7 H( E+ i$ i3 s. V if <condition> then' Q+ {3 U8 s. H, t( o( h
<statement sequence1>;
: C) g8 M6 I* w4 }- E elseif <condition> then
% m. e1 M G% b/ B* s: d <statement sequence2>;
/ `; W* L m; [0 B" } else
- c: A3 U! L J2 X, S3 m) o$ i! } <statement sequence3>;
7 L2 e7 S; q- M6 @, H- k end;
; U5 V) f/ F- N, l4 q- o如果分支比较多，用：
3 u0 r5 K+ H! w2 u/ p+ K8 X inspect <expression>/ p0 j8 r9 m2 K' f. }
when <constant_list> then# H. t. _! ]" y, h! ~
<statement sequence1>;
! B6 ^4 D) }+ @! B when <constant_list> then
9 h7 ]& }% N6 _: t9 | <statement sequence2>;
: P: ]' L7 z2 ]) U8 |, |/ ]& f ...
+ T/ ~4 }0 k( E3 Q else
. t+ e& v+ J7 M, i$ R* ^7 e <statement sequence3>;
& |& U* H5 P: G* n6 ?" j7 Xend;
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B4 S2 o# S7 {% O2循环语句
3 z2 }) [# o" M r+ E: J8 f6 ^$ ^ (1) from <statement sequence1>0 \( f% ^0 l5 M& S# O
until <condition> loop. A9 b, s0 P R
<statement sequence2>;) U) B( d4 [, x3 E
end;& k& Y7 s$ s7 U
(2) while <condition> loop2 @" k. @! A3 c5 c2 G
<statement sequence1>;* c2 E# u5 Z% {; P
end;% X, ?" ^+ I1 @3 K. ~5 b
(3) repeat + F7 @1 `3 J; a$ Y0 k5 y% Z! ?
<statement sequence1>;/ e. g: o' L0 s$ m5 k
until <condition>;
# I& v" G) y5 _) |7 A/ {- W (4) for <condition> to <condition> loop& e& U2 n, R5 \% u9 C5 j
<statement sequence1>;
+ ^0 S+ k8 r: F( j" T* y$ V next;
" T c- a. Q, U! u3中断语句4 h0 H7 g' E4 u: Y' k2 _! ^
waituntil <condition> prio <integer expression>;
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以上为常用的函数！8 S7 b4 _5 B! D( \- ?1 f
还有很多，如有需要我把资料发到你邮箱里 ( E7 a# F- E7 R' ~. a
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