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发表于 2012-11-13 08:48:12
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显示全部楼层
1判断语句
) r; J b t; |1 C: B6 l if <condition> then) ?: w* @) }1 W e4 h: \) I4 x
<statement sequence1>;+ z/ _9 b& l; f
elseif <condition> then
) N% N+ n4 C5 S8 i0 H$ ] <statement sequence2>;9 L& R& m4 |, T% H/ u2 z% ^
else
+ O( E$ D5 V7 S9 B" m- ]( l2 B <statement sequence3>;! Q4 w# y' h* A7 h
end;
6 I4 ]$ c" ~- W! L% A如果分支比较多,用:
0 X" a# B @2 U1 ~ X% I& T6 o& L inspect <expression>/ Q% k% a/ N" d: f( G
when <constant_list> then
) e6 W( v3 j* n, J( ? <statement sequence1>;; U; ?1 G2 @9 I+ A$ C
when <constant_list> then( w) T9 I6 i; J
<statement sequence2>;0 n* L6 R' `0 _! C. n2 I) F, L1 p
...
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<statement sequence3>;/ O9 M1 \7 L ]) t; Z* s! Y, h9 Z
end;% n I* [2 W3 ~; V* z
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2循环语句
% J+ S3 \* i! x2 B- c+ o (1) from <statement sequence1>) G3 v u) p4 f! I L+ Z: C
until <condition> loop( K4 k9 X+ L+ [
<statement sequence2>;. R- s: x- @- c) B% p8 e0 k
end;
; p8 v8 F/ [, z9 X# s$ C (2) while <condition> loop( m4 S. Z' B# G1 q1 S4 }- c
<statement sequence1>;( e1 G8 E( \! [8 ]
end;% p* A$ h( W. F$ M' a5 K1 f# N. ]
(3) repeat
2 t0 x4 I) w; W. n5 A6 X( k <statement sequence1>;- E" W+ T' `; I
until <condition>;' |2 d6 a, Y% F H
(4) for <condition> to <condition> loop
& a' }+ ^0 x6 l2 G4 g <statement sequence1>;0 q" g* _2 f2 i# V8 i/ B
next;* p$ w+ W9 N$ q& h
3中断语句8 o; n* q! C, ]9 M
waituntil <condition> prio <integer expression>;
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3 t# ~ @. g( w( `0 m- I以上为常用的函数!6 G! _: o- p V, {* s
还有很多,如有需要我把资料发到你邮箱里 0 @' q C7 `; f1 V9 B8 k) x, J2 ?
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