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发表于 2012-11-13 08:48:12
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1判断语句
1 U+ T( S5 S$ i+ G$ L2 A y if <condition> then
( h; H. n' t8 g9 @% W ^ <statement sequence1>;
* A9 M; p9 q0 b4 B0 t1 a elseif <condition> then5 b( _% x9 \/ p- w5 S
<statement sequence2>;' S* r# w8 O: A4 j( T/ S+ ~: q
else : V- g+ p) u: o9 G3 u1 g
<statement sequence3>;
# }2 f, O! t# j2 x# N end;
8 z8 h: i$ Q9 p4 D( ^# W, m7 D如果分支比较多，用：
' N! Z+ ~. `/ {& |: U; ~ inspect <expression>
! n3 R! S7 c) y3 _% Z( A when <constant_list> then
" L3 N7 x# O% z/ @2 [ <statement sequence1>;5 C( d5 Q9 I( M) r+ ?9 Y4 j
when <constant_list> then
- w: P" J4 `8 p q+ g/ a <statement sequence2>;
2 |$ `) O% y+ { ...
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<statement sequence3>;
3 t4 w4 I. O1 n! Zend;
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* ?+ P' X& }* T) H/ p2循环语句+ a1 D6 g( E5 T* j: g4 O5 y3 v
(1) from <statement sequence1>0 ~& A6 [; P! v( N, L( Z1 I
until <condition> loop$ r& P" l) q+ p" ]7 ^ J
<statement sequence2>;
2 @" u0 q) G& d, ?, r end;. G$ W, I) U3 B1 I# }7 g, a8 g
(2) while <condition> loop
: [4 k3 p, X& a2 {! _1 g <statement sequence1>;
. I& P5 e/ c$ t$ O3 |$ f end;
/ x& |" v6 ], V8 q. b (3) repeat
9 ~* P" H- I2 M% j3 j6 s <statement sequence1>;
9 p' H, x9 `+ A until <condition>;
0 W6 p- `; B; J( ]& }# D, ~ (4) for <condition> to <condition> loop! b: p% z) Z/ ~3 @+ I
<statement sequence1>;
- |" X+ x, N. b* q7 p# I7 X next;
" t3 M! @& j9 d7 Z8 [+ u3中断语句
( a% ?( b. D7 L2 J& j1 F) _ waituntil <condition> prio <integer expression>;
c4 o- b3 r# B/ W% D8 x0 k7 f3 i4 c, [& `) ]
' T$ [( l/ Q9 d7 Q以上为常用的函数！
1 m5 ], x: f8 v+ q9 y还有很多，如有需要我把资料发到你邮箱里 ) S' B% T2 l9 Q- M( s
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