|
|
发表于 2012-11-13 08:48:12
|
显示全部楼层
1判断语句* t% {! w8 ?8 Q T9 E# i
if <condition> then
: d6 h6 U3 D. J% T# u, M7 d+ I5 C6 @# N <statement sequence1>;
- n1 Q$ I& ?) G elseif <condition> then2 I9 U7 b. Q9 Z
<statement sequence2>;# x S0 j0 S2 a' @+ h0 u
else
: U- v2 l+ C! G# W9 G I <statement sequence3>;, \ ~. _& R* ^
end;, f& S. X: V. v4 j/ n8 Z |4 ^
如果分支比较多,用:
6 N( ?0 I) @. Z. c# O, `7 z inspect <expression>
( l, ^) ^0 t$ x1 v9 t3 k" l6 d' n when <constant_list> then
1 k1 h* U& K4 \6 ~6 p <statement sequence1>;
# n5 }% ~9 I! t7 z4 n L* a# Z when <constant_list> then7 ~5 j, y: b9 `$ M3 O' ~( N
<statement sequence2>;( ~6 S2 }) m' b* D
...+ }" H* q+ i! R$ n9 u
else( i" o; S( o9 ~ b) _4 r
<statement sequence3>;9 K8 M' S+ Y% q4 w+ [8 J
end;
1 ^& E) U3 q: E8 J8 R) b
* D$ b$ f$ w+ G; U2循环语句( D- K& F; b1 k, Y( q- I7 v
(1) from <statement sequence1> {5 w% I o. _! r
until <condition> loop
8 y* o+ W: \' ]' _# p <statement sequence2>;
/ Y9 E. o5 b0 A$ C& R end;
- U1 I, P4 ?: J& t; o' W2 [ (2) while <condition> loop
r0 K3 @8 `/ x l: {. K* } <statement sequence1>;
/ N2 p0 S: F+ `( S) S end;
& |4 T6 K$ i( t5 ~ (3) repeat
9 y' b# e8 m2 D0 C: w7 o5 T <statement sequence1>;! ~5 W; q: G( D% i( s$ j
until <condition>;* A3 F2 W% m7 @
(4) for <condition> to <condition> loop
; E, K. k# h6 {: {! D2 J <statement sequence1>;
& m+ m ]9 _# u2 G; G$ V next;6 w8 [/ O8 h: x/ i; n. K
3中断语句
$ h4 O2 L; P9 _; Y% s7 w waituntil <condition> prio <integer expression>;
( W0 q6 m0 l) X; q0 B6 x0 P& c% C2 Z, E% g& |! j! y* g a
1 I, G( O$ J1 t C% P4 |2 O以上为常用的函数!( B% c( ?& f0 \3 L G4 {
还有很多,如有需要我把资料发到你邮箱里 ! |3 I+ Y; P ], S, p" K
; Y2 W3 D, u; j
b/ p; D8 f* f' Q9 G- O. L1 i5 Q( A2 N& a8 [
+ h0 [5 K/ p- O; `6 |0 e W
# T4 g2 b: T2 ?2 H& y1 ?
9 Y U2 I( b1 `9 Q9 y* _
: h& T5 h0 q1 h& b2 S( A" k. x! S0 M# k( @; g6 K6 y
3 X. ~# O; u1 [! o# v' d! v ) A( C5 G, |5 h( f$ q
|
|