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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
! N U+ B1 ~* @: O' D: F L' q if <condition> then0 c0 h) l4 ^1 \/ Q; J% l
<statement sequence1>;# \; c( Q2 _/ k9 Y# |
elseif <condition> then
( ?2 E3 C' K" M9 U' I& c$ a <statement sequence2>;, Q3 e% \8 Q8 P1 L( p4 }8 F! r k
else 0 a0 i: J, E8 \4 c$ ~) {, H& ?+ a5 @) Q
<statement sequence3>;7 h5 g# F. N6 y, C
end;, c! {/ l/ h) q' W& x; r! J) J" X
如果分支比较多，用：
2 ]9 w! u' L" g; b( R$ \% X inspect <expression>% [$ Z/ [7 c( [ _3 |9 i! t& w
when <constant_list> then4 r& p4 k. I3 g8 L: ?6 L6 H
<statement sequence1>;
6 b# Y6 j- S1 N) p2 ? when <constant_list> then$ J4 R2 U9 e: c$ _
<statement sequence2>;5 i3 x* B! g) S( q: ?/ t5 Y; h
...
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<statement sequence3>;+ J* e/ f+ ? ~6 h' I, [9 U9 ~! I$ e# T5 @3 B
end;" X3 E( ~% ]5 S7 Y( n. A
# p/ P# e3 z& D2循环语句$ K* }3 a$ k: ]
(1) from <statement sequence1>( m9 X8 Q* L1 n$ @4 y8 }
until <condition> loop
' Z5 D6 f% H% X' r <statement sequence2>;
: M4 Z5 q$ W+ p9 o w0 K) N4 W end;' J; y' m) ^* b7 v% A' _
(2) while <condition> loop
+ W2 t! |1 V( {8 c! A1 J9 f <statement sequence1>;
, K/ [. _4 [- R4 c2 P* W n* l6 h end;
" h8 z5 n- D% C1 \ (3) repeat
3 U6 l j: M/ Z3 k$ | <statement sequence1>;
. \- Y/ W5 ?4 _' @ until <condition>;; ]$ n) a; N" D9 j
(4) for <condition> to <condition> loop
2 {! d' S& `8 _7 C* N <statement sequence1>;
! e5 | d4 ~1 [; L( Q) K7 ^ next;/ G8 ?; ~! O4 w4 d+ P! J
3中断语句
3 p- \/ j g5 E waituntil <condition> prio <integer expression>;
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. x2 x$ E" } G- O, R5 N以上为常用的函数！: }3 N7 b9 ?8 d" ?" ~& Z
还有很多，如有需要我把资料发到你邮箱里 ; V" r2 K. c9 K( m- X; A
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