|
|
发表于 2012-11-13 08:48:12
|
显示全部楼层
1判断语句
- m* G# c& M) ^. c5 f3 q if <condition> then( `( m9 ?2 Q4 s
<statement sequence1>;" U) C! N9 j7 k6 @" g8 K
elseif <condition> then
. m3 N H& W! V1 v* i# K% t3 p <statement sequence2>;* d1 l' i- V$ _5 ]$ x ]8 t) X' J
else $ B! W w! K* k* p
<statement sequence3>;
2 p, J! w, P( p4 N end;! H! S5 w0 ]2 s" h' Y2 [, `, y' y
如果分支比较多，用：
J3 C& k/ j+ d1 K inspect <expression>
$ }3 @; d. F# P& S$ E( t$ [+ h when <constant_list> then
3 Z# }8 C8 z$ ]4 H2 Y1 V& r <statement sequence1>;
" {" r/ C( R& v- O" F when <constant_list> then
/ _' E. ~; m% e, U9 q [0 n <statement sequence2>;- g) \, W$ b" ?: d) t! v
...
2 Y( H5 l$ _* ? else
- u% H: a) S8 g/ s <statement sequence3>;6 a3 m, g8 I. J6 Y
end;
5 E" K' H0 d+ p/ Y ?' T% w/ B5 ^3 _4 H, n4 M6 e
2循环语句& `3 I6 R' ~8 d/ ?7 }
(1) from <statement sequence1>
: i+ Z! D1 D5 j" {$ g2 ] until <condition> loop. |; }, ?* D4 K+ j; ^- L0 Q
<statement sequence2>;& S" n3 ]: |0 @, s( z
end;
7 G' W* w1 f* N7 i+ V* {! N7 U (2) while <condition> loop% T; N* b# k9 w- h7 @
<statement sequence1>;
" t# t; \: O" T5 `, x1 t! y) t, a end;4 S; w) b! }$ T' s7 V9 V7 m+ u
(3) repeat
* Q$ P* b2 I0 F: R$ @ <statement sequence1>;8 H- ~) `, C# z/ @& K
until <condition>;
h% G, d! y% M. a$ w' m (4) for <condition> to <condition> loop
9 g: a7 K4 P' r( y/ K0 u& p; ~/ x <statement sequence1>;
& I* N' A/ g/ y. ~$ \" a' g& n next;; U3 f0 [* z. w" Z% U0 J4 \& L6 q# f
3中断语句. _7 e4 r/ \" H7 R$ y) e! C
waituntil <condition> prio <integer expression>;
2 {: o- P3 X" F x& k ~
6 h3 y0 s0 G2 S9 ?. a$ C% h, c/ B$ x, c, h. t t- d
以上为常用的函数！
, v( A9 L8 i g还有很多，如有需要我把资料发到你邮箱里
0 Q) P! k4 Z6 A/ q0 ]5 V/ Q' M& D% U0 N$ }8 Z4 e) Z, \
1 P, o. m$ ~# q- w7 K
+ s% z5 Q3 V, B( b7 L
n: Y8 t3 D0 @; E, r; ?/ }
) S% W% b* Z0 y6 s% p. j" m; N" u8 Y% P+ H# D* K
5 |0 s& ^) m* g. W
4 t; G; ]+ S; T0 x$ n$ V: t$ y
3 U, k$ N! B* D6 w" r* u3 ~3 ^
5 o1 V* }6 z3 e
|
|
[复制链接]
