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发表于 2012-11-13 08:48:12
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1判断语句- I$ r) j M4 ]; }
if <condition> then0 l" P& X4 w. t
<statement sequence1>;$ Z! O2 C2 t) H! ]- S2 m
elseif <condition> then9 H2 H; Y, v ]4 _" P+ Q" s( A" ?
<statement sequence2>;! Y" N3 _7 b( }; ?7 d
else
4 s7 @' X4 ?+ X <statement sequence3>;
' @7 O* c8 y. ^" f7 j+ Q: [) }( O end;
/ x H1 ]/ r- i8 G; z$ }如果分支比较多，用： R8 D9 o. J- X" ]- ^
inspect <expression>
V( c. ^& F9 a when <constant_list> then
. q3 A' a5 [# z5 d' i <statement sequence1>;
/ O6 X8 C" f2 } when <constant_list> then
( O+ n1 c; V2 l6 ?( a <statement sequence2>;
1 p$ ? {& U+ m1 t, m .../ c* q( g6 x, C- ~/ r* Q
else4 s/ G& o2 b3 E
<statement sequence3>;& Z% V* s" j) u0 I! L9 a+ i; w$ M1 z
end;
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. s. d+ g A W2循环语句
0 `, k1 a/ X; z; }' o) ?4 X (1) from <statement sequence1>6 c6 I! Q$ d' G
until <condition> loop
9 k/ x4 \) O7 |" Y& C; H <statement sequence2>;
- O- U% }' ?. f end;
% a8 x; Q5 d. f, K* S4 ? (2) while <condition> loop
4 W7 w/ B5 N3 w <statement sequence1>;
* v6 m5 t' k, {( m) e end;2 O5 ~* [6 w. d# M5 |
(3) repeat
: T* } U7 K( j1 d <statement sequence1>;5 _6 ~) D4 u; ?2 j v% C+ V
until <condition>;
, l9 h# ^! x- [0 t5 Q9 z8 J3 H: q (4) for <condition> to <condition> loop
: A$ i2 x; A0 c <statement sequence1>;6 k2 Z) f2 X6 k8 O& z8 \: V
next; W' J7 Y( {! u, C- c. k& B
3中断语句
5 ~9 R6 `2 x2 R5 z. u5 ?( `6 J waituntil <condition> prio <integer expression>;* f% a1 b7 f. d% ~
, z R9 h- n8 S
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以上为常用的函数！
- g, n5 ?* C9 Z还有很多，如有需要我把资料发到你邮箱里 7 N: q4 o- h4 b
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