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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
- B% A/ @* I2 f) }" G4 w0 y) w if <condition> then
, @7 w4 b* S0 d3 O! O* n <statement sequence1>;3 p4 J% E$ A2 E R4 U" g$ ?- g
elseif <condition> then' u- o9 o7 p+ v+ C. \0 M |8 l
<statement sequence2>;7 U$ P: N G1 N. A6 N$ }/ D* a
else 6 e* ^/ h* ` }; U; b
<statement sequence3>;
$ A% i: K7 l$ j6 v$ X( x0 z, P end;
1 h* a% Y+ c6 @. h0 Z如果分支比较多，用：
4 E+ K" L( E" Q0 q; |- j# y inspect <expression>
/ Y' h7 Q1 [( e6 E- Q when <constant_list> then
9 n9 ^; t2 g4 h7 \! U% X: u/ ]& _ <statement sequence1>;" t7 [9 f' o E1 P# z2 v8 ]8 g. x
when <constant_list> then
: x1 q( N! k; l1 b2 ~6 C) c <statement sequence2>;. e' L2 c0 u( U0 c. z
..., R: N# Z0 Y1 n0 j
else
1 A7 s Y D# K0 _/ G6 B& A0 ]3 _ <statement sequence3>;
& G4 ~" [$ x! w! w1 H: I5 Dend;$ ]2 ^! p' Q& t/ c5 j# F
1 h7 B5 E7 P' B( V* X7 Y# q2循环语句
2 _6 w& d! p p N& P! R (1) from <statement sequence1>
- ^: C6 T5 g% Y; m3 g until <condition> loop
3 a2 E2 I9 ^9 l5 K <statement sequence2>;
? Q( ~% h& f2 j, s8 }6 o end;
2 |1 I; Z. t g3 x5 _ (2) while <condition> loop
; Z, K' k! ]8 T3 Q# Y" z <statement sequence1>;
) q! U! g+ K2 u, J/ t- v7 U end;
/ U& N- j* _3 } (3) repeat
' P* l% e' O0 @- J. _8 b* [, q! z <statement sequence1>;
; C+ n9 Y# j6 m4 i2 a8 @* ?# n until <condition>;- L/ ]& U9 Y, U5 T$ n+ H
(4) for <condition> to <condition> loop
6 X/ G- U, O+ [5 @8 n* B/ ?3 x/ g <statement sequence1>;
- o7 r) e) f, G6 h# v% @1 n" V1 [ next;3 P0 j u# q' T! J; P) ~
3中断语句
( y9 |( b3 Q- O: W9 L' X$ S6 V waituntil <condition> prio <integer expression>;
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& X: N7 w4 r, e
以上为常用的函数！2 E" B; Q) z3 D# o
还有很多，如有需要我把资料发到你邮箱里 / N) T6 B3 W+ j: P% m
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