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发表于 2012-11-13 08:48:12
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1判断语句3 ^* s5 n* W- ^& m; \
if <condition> then2 M- }9 T0 b' W6 L) X
<statement sequence1>;9 {8 N0 A9 v! ~( t+ ]( {1 R# l
elseif <condition> then! Z' a9 p B! F- t* o0 i4 t# K4 V
<statement sequence2>; j7 U* Z Y4 N6 P
else
+ x% g+ ?, {' n1 i" Z <statement sequence3>;
$ H5 V/ {; x5 ^; D end;
% m# ^8 ?: t! u2 p7 Y0 D如果分支比较多，用：
) r4 `0 R6 x( w' w5 p inspect <expression>
# i1 @, s2 F# j# Q" a* M when <constant_list> then
3 G- U; l9 I5 G; Z1 M& ?) n7 f0 @ <statement sequence1>;
6 T9 u% n0 \+ \' p; n# l# E when <constant_list> then
. [. R9 m/ ^- l" \ <statement sequence2>;+ x+ n, {- x; C9 ?9 u. n
...
; Z7 g) s i$ t4 F0 k else
N. h5 r+ Z" I# ~5 f <statement sequence3>;
- @1 d/ C9 g: E5 l1 d5 \5 l) Xend;
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) _2 {" q. c, Q! {1 c7 ~5 t% N2循环语句3 e: Y, o2 H. C
(1) from <statement sequence1>
4 G5 V1 C$ u% m h% r, c until <condition> loop
! f; N* f2 _ K' P' B. ]9 ^ <statement sequence2>;
4 V: q9 Z) w- V# N. ?' I1 k; C& N end;' }8 ^" S( q; \0 l
(2) while <condition> loop% k7 [/ s( n4 v: K0 u" G7 {, Y
<statement sequence1>;2 _/ [; c; f% X% ]3 D, G! `, u7 W
end;
2 H V/ x. W' m* f (3) repeat
' b8 |. P+ \: ^2 P2 @, i <statement sequence1>;
7 F- A: U' R4 C n until <condition>;5 R. D; I2 v. I, S. e" H
(4) for <condition> to <condition> loop
3 Q- O4 l5 h. d" n' C <statement sequence1>;
8 d i m) \) B! j" o next;
6 y# M7 e# Q% K6 e& U+ ]: G3中断语句
6 z! J: U* e" j( m' K+ w2 C4 n waituntil <condition> prio <integer expression>;
' H: ?! [' L8 `7 i. U1 g$ ^) J' j7 G- A
* Q" i2 N% t2 m, y8 f以上为常用的函数！
2 g! ?3 Q9 P! j+ q- n( I6 O! H Y; N1 v还有很多，如有需要我把资料发到你邮箱里
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