|
|
发表于 2012-11-13 08:48:12
|
显示全部楼层
1判断语句& i4 C5 f& v6 D
if <condition> then* }- n6 `- A) E K& i1 [: p( [8 @
<statement sequence1>;
5 E3 B* Z, k" O elseif <condition> then& L5 I3 m2 @- w+ H$ F) l, ^
<statement sequence2>;+ c* ~/ c4 O& Q, u' d2 S
else
e w) _ ?6 O6 X; C$ @ <statement sequence3>;
/ M; W( X- Y \6 R, \, B# v( i) m5 x end;/ X' K" a: C1 ]% B) E) I
如果分支比较多,用:# \+ t& h; u' O0 f; _# O
inspect <expression>8 [1 O* P2 N' g o
when <constant_list> then
: w* X+ F5 r: G <statement sequence1>;& z+ _2 V2 I# t6 F: ^
when <constant_list> then- X0 V$ @- ]) T- [* T4 X2 u0 L" V
<statement sequence2>;3 R$ P6 c! j4 L
...
+ @0 l# M H6 O5 a2 }, t6 N else# d" @' S/ K8 @! |& \8 r) k. S( g
<statement sequence3>;
- p" S6 a0 {: \& Oend;( E2 p" n. s- w7 f
+ [' G1 [2 ]' V3 z5 v- E5 N2循环语句
1 M/ n, x9 g$ X' O7 g (1) from <statement sequence1>* W% y3 b! l/ @6 O7 \( }3 e0 O
until <condition> loop
& n) {! o& g& t <statement sequence2>;
9 a4 P& |( `3 @0 b end;# ^' o! [) l/ a9 h. l
(2) while <condition> loop
8 U, d5 j5 a: i; z3 m0 \ <statement sequence1>;( l- Q2 p" b) g, A! S/ l
end;
. }% S- r' g/ ~( B (3) repeat
: l! z2 }4 e! {& L# c <statement sequence1>;
" E! E# r0 K. C until <condition>;
: E* r$ H, [7 H; {. g8 \0 H (4) for <condition> to <condition> loop M0 W6 y; D* G* [, A" W/ a
<statement sequence1>;3 u# p) }1 ] a# j$ T& a" p- T
next;; ^ U; W9 s0 {0 Z
3中断语句
$ H! T( q" Y. y. X: y3 t waituntil <condition> prio <integer expression>;
9 \$ A7 G x/ u8 x1 a, W/ H: T
6 }9 Q( P" k" c( @. w) M7 a8 B$ |1 P! u/ p H0 w, t5 X& O# h
以上为常用的函数!
: Z$ s! G1 Z7 x, P还有很多,如有需要我把资料发到你邮箱里
! _) Z6 g4 [( Y6 q
3 s( a9 r! J: \9 d, d; r; m R& ?9 n& f e) N3 y
& o3 L9 W. Y5 a" p/ i' R- P4 t& t6 K3 D' ^
. E/ k5 T$ {$ u6 F8 T3 a! w1 y% v$ A- j' B& E/ K
0 i# B9 t9 V4 o( p6 ]
( _( v4 {6 A/ S ?/ v: W; ]$ c1 n9 z; |
- k& Q! ^* d( ^- j; X * z% J* Y" q5 i& f& A. k' ]' I l
|
|