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发表于 2012-11-13 08:48:12
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1判断语句$ C% H- }: W$ e: y0 E8 b( t
if <condition> then
9 V/ [% M, ~( `7 a <statement sequence1>;
/ |: m/ L0 A6 j9 A' f elseif <condition> then& K( R- M2 ^8 e+ P
<statement sequence2>;
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<statement sequence3>;
+ f% D% d6 {& ~% O4 Y+ S end;
; W; p* ^0 A( M" ^8 P0 W& s! J1 k% O; b如果分支比较多，用：
. Y; t4 V1 c; n0 P( t# O inspect <expression>3 G1 X- c$ W1 v, k/ ?0 d3 J' q
when <constant_list> then
2 l X( f/ j5 z& e2 w <statement sequence1>;
; [$ n2 W" v+ C3 Z! U! X0 B3 _% B when <constant_list> then
K8 r3 f3 [ Z2 Q5 g <statement sequence2>;
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else
" r7 l6 T1 ^$ O, ~9 s+ {" L <statement sequence3>;
5 A8 Y) e8 V8 }3 [0 rend;
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& {2 J* w0 j& f4 {/ A( h% U2循环语句
+ U3 C( O% t9 Y+ H7 k (1) from <statement sequence1># X/ X. e8 b" G! z6 p
until <condition> loop
; N( X/ U% _. J' W <statement sequence2>;7 B" O( u+ N3 h' K |' x
end;3 U9 @" X8 f* i- j4 s( Q
(2) while <condition> loop
( |" `# s- R/ u5 b <statement sequence1>;7 ^" o7 u6 l0 M2 c7 y
end;
* T9 ?6 I- G. g: k+ a+ { (3) repeat
" @2 S5 C( s8 }+ d) r% D <statement sequence1>;
# `. W( _, d* A0 J4 C until <condition>;, `! [9 U3 B2 }* K" ]
(4) for <condition> to <condition> loop- _1 P! L3 w5 T5 A8 [
<statement sequence1>;
* D. U3 y8 y3 M% n' B! [ next;. i& v. G2 ?9 o0 x
3中断语句! t% G( B8 R5 v( _5 ]& f
waituntil <condition> prio <integer expression>;( Z5 y" W( ~9 C& D" z- l
9 P7 W2 \0 a4 F- M& K
1 E* i; [, B- F; N+ m: H# o$ n以上为常用的函数！
: V1 f# s& B# E' W! F还有很多，如有需要我把资料发到你邮箱里 ( n K0 Y+ _0 ^# |5 g. I& G: T
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