|
|
发表于 2012-11-13 08:48:12
|
显示全部楼层
1判断语句3 ]% R5 Z; M" Q5 Y! Z; @: w, i9 d
if <condition> then- i, f" l7 x1 N# J- x. r
<statement sequence1>;
0 w) ?( N3 O7 E# U" F' I elseif <condition> then! a x. X6 m" A3 d: o
<statement sequence2>;" Q" T/ R# `- ^/ `0 ?" p
else
7 f! W3 ]3 A8 @: q& G) r <statement sequence3>;
! g. s( Q* N4 L- O1 K& I) | end;6 I$ {" z6 g# v) w
如果分支比较多，用：, R. P4 n! p" d% t. y
inspect <expression>5 W# A8 f+ B( ^$ F; M
when <constant_list> then
" C1 s4 d/ `+ C, ?- J0 f" ]+ g <statement sequence1>;
0 T! s9 S0 \, i+ T( D% Y when <constant_list> then
& t9 \- m3 s6 v1 M& A5 E. u <statement sequence2>;
7 X7 W8 E/ g$ W5 P ...
7 m2 a+ k d2 o6 J, m: ^% K& n+ D else- W# c# ~8 i; P
<statement sequence3>;
/ @0 l1 K- e2 Wend;
0 _6 n6 ^) x- y# F" h3 k5 ?0 y9 c/ R) O% b) h R9 c( `1 b* x
2循环语句! ]' ~/ d8 n6 Q) h% Y- b1 o _! e% k
(1) from <statement sequence1># x6 l" M* n* ]( l
until <condition> loop
0 j# k4 @9 \6 x" Z5 M. @ <statement sequence2>;
2 G6 ~2 B2 b, t# ]" I' x end;
) ~$ b1 m1 I2 S% }/ h A (2) while <condition> loop
& B* h- |* w7 E: u u0 o ~1 u J <statement sequence1>;
* I; M$ X. ~2 s; ~: i, {( ^ end;2 E1 m: [3 P6 S
(3) repeat
: P5 `0 U5 n# D0 j <statement sequence1>;
1 J | V% o+ ?" K" g, s5 T until <condition>;
6 C7 F8 ?8 F4 |2 w1 z9 p3 G2 b (4) for <condition> to <condition> loop* e0 ^2 T% O3 c3 l5 }
<statement sequence1>;7 Z) B& b' d" A6 I. _- C
next;
7 F4 W" O, p, x L+ r* H4 R3中断语句, G, p2 n1 z, m! v
waituntil <condition> prio <integer expression>;* p. \- q- B. @0 F* |8 P" b
5 w3 G1 T$ o b
% J& U. A' T% Y8 w! b1 p以上为常用的函数！
8 D! O7 X5 p* @+ B; _9 j还有很多，如有需要我把资料发到你邮箱里
3 x! J0 v. `7 o* |
$ i3 |: u: ]6 L! r$ F# B
7 O( |, [1 b ~8 j5 x( p
8 X* ]' Z5 ?9 K5 m
) T: X! Q6 ^$ S) v+ v* B: K0 {" c: U" @8 M8 i5 C
3 j/ k- P$ v7 Z; V0 |) u5 A
$ ~ K9 `% k! F* e
" N _ w/ S. \; ` q% q) p6 [* @0 p; P% `! l. X2 S
' N: E+ g g, U0 j6 R
|
|
[复制链接]
