|
|
发表于 2012-11-13 08:48:12
|
显示全部楼层
1判断语句) G/ d; _$ U* [9 |: C9 l# t! ]/ u8 n
if <condition> then o9 e& u$ V. q: K7 {
<statement sequence1>;2 b9 G, S- n. s7 a1 s9 s D
elseif <condition> then0 V, C5 f) Y' ? Q
<statement sequence2>;
* h& |. G7 p5 J1 U( l else 8 j8 f: g* Z; ]" j
<statement sequence3>;# u9 u% s: X0 G3 x @( i
end;
, |- i0 B: {$ E6 P' j如果分支比较多,用:
, L0 D4 W9 c% G, Q# e) i* n inspect <expression>
; Y7 J, h) [' O- G' t5 U when <constant_list> then" R. a1 J$ x3 U+ R1 U" i! k
<statement sequence1>;- {" ^( s* Y! d, K2 t5 X
when <constant_list> then
) M( A% U. x9 m" y* Q9 n0 e <statement sequence2>;' c+ |' d' e4 c* f* ]* D1 T9 Y# s
.../ }! b! m- X" e6 ?: K* F4 l# U
else8 K+ B; v, N# N! J$ n
<statement sequence3>;' K; @! {) b [
end;: Y8 ~# x1 R6 `+ W
. _7 _% L5 o# I5 c2循环语句
* p; q# X# m' H- a' v% D' { (1) from <statement sequence1>
- E! }+ ~5 S* R6 | until <condition> loop/ M0 d. l7 E+ A& g6 l" V) Q
<statement sequence2>;
8 L& x; h2 y9 P% l- g/ L end;3 O% z/ P8 `5 R8 H( @. W; q0 C: }1 H
(2) while <condition> loop
. M3 {9 n3 n* [0 N <statement sequence1>;5 o/ N1 u" B* d1 {4 i0 u5 {$ {9 p
end;
3 ?% e- a/ @# f$ F* J (3) repeat
0 f% w5 \* n V$ l7 Y) ?! C <statement sequence1>;0 P1 S6 |- c% M9 l9 i( q% e! E$ E( E2 e
until <condition>;
, \2 i0 F7 S* S0 Q7 j) `* ? r (4) for <condition> to <condition> loop2 O! ?' j% O) j3 M. q/ |, j
<statement sequence1>; [! j1 p" W$ n# U: z
next;
' ~/ X; u% m4 m8 f2 B, b3中断语句
M( c0 J9 y9 \. N waituntil <condition> prio <integer expression>;
# A3 D8 t) f1 R2 l& h
+ U2 H& q$ O [8 s! o! s% r4 o% d7 L
以上为常用的函数!
/ F9 T1 u: t6 c P1 K还有很多,如有需要我把资料发到你邮箱里
5 \/ p7 m4 v" h7 G `% u: \: l" u) V( |! w
& U4 x% ]% ]3 _9 E$ w
9 i* J9 Y9 [# d' g4 n& c 1 C0 f8 k ^( m7 F' G$ ~/ p p3 {
+ j; y6 P: c" E+ z9 U7 N/ F* [- g# Z9 g, d4 _5 V
, \$ Y' j" L% A( d; k
7 t7 j' i- n% }$ H( w3 p$ A
# o- a2 e5 d' k( D
8 F% |( x- ?5 J( x' e& \ |
|