|
|
发表于 2012-11-13 08:48:12
|
显示全部楼层
1判断语句- N# y8 V+ z# [1 S' L
if <condition> then
2 t, R. H% [, v. p' ~3 e+ w) o <statement sequence1>;. B( F* b. O' h7 e0 r( R
elseif <condition> then% A* u1 b+ S! v# n! a1 C- i# U
<statement sequence2>;
! ~2 g& ?$ ?& \ else / L; M% G, O, C m5 k) z
<statement sequence3>;: f$ B2 i6 A8 e
end;
2 }1 P, z- e+ w i$ i如果分支比较多，用：
! h0 T8 m3 Q( E inspect <expression>5 M0 i+ H3 X( e- g
when <constant_list> then
0 Z5 t* ^3 ^# t1 U <statement sequence1>;
+ w3 C7 S. M+ p6 F' S when <constant_list> then% ~8 n3 |& y9 v9 x. J* N$ Q
<statement sequence2>;
* Y1 g/ { l9 H# J( a ...9 X, M' {! V( F! }7 ]2 N
else. d9 q) K. v/ L1 y" _( u+ ~
<statement sequence3>;+ a1 E0 P$ P+ k/ p+ d
end;$ d- P8 W8 F: p- P
3 f% G. r# d- s! S2循环语句
* R9 n3 C+ ]$ `; ]: v, E9 D (1) from <statement sequence1>/ i+ R1 c7 k! Z) @- i6 d3 [
until <condition> loop
7 @; o$ K" `, ~ ~, K# K7 H <statement sequence2>;
$ E/ N2 D9 {6 J5 {: t" m4 n end;- l( K8 h4 N# R0 x; Q
(2) while <condition> loop
) e( O: m4 ?7 S: {1 Z5 O2 ` <statement sequence1>;
2 v7 h* U& r6 l% i1 r# t end;4 ]1 D; s; N: y' D
(3) repeat
8 @5 s0 V/ y6 a& D# D <statement sequence1>;; r6 j$ v/ q. o
until <condition>;
3 d4 h0 d& B( o7 _! r3 Z: _ (4) for <condition> to <condition> loop
$ \* S1 g) J( M: o2 M, F: J <statement sequence1>;
4 r q' U/ ]# z* @' A/ A5 R2 w' c next;" |8 b0 L6 n5 ^8 B9 t, I) ^
3中断语句' c$ Q, Y0 N$ n
waituntil <condition> prio <integer expression>;0 v# M" ~6 I) N- b$ m% |1 z, k
& _4 Y/ Y) ~! C! r( G6 u9 Y6 L
4 ~$ \1 n7 s0 j; _! W! F以上为常用的函数！
/ B$ g. u* e' r" [还有很多，如有需要我把资料发到你邮箱里
1 d7 p, l! b$ M# ~* c
: z7 ~2 T7 \9 q. F7 H: p2 t) P8 b( [; h- k8 G) n
. L0 }) D4 ?% b 0 |; Y, d5 E! C C
6 q0 D2 x. u; P. F
1 Q y3 R" U4 f( K; i
6 f; t& Y, ~5 E" O+ a! p$ u# P, f: m, R! F' W5 }
) q X. K5 U6 E. D
: X/ F( r) Z+ G2 o+ y$ P( F
|
|
[复制链接]
