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发表于 2012-11-13 08:48:12
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1判断语句
: Z* U8 [$ g% j: K% n0 @! j if <condition> then
7 G7 ]% h) G4 T. Z+ j0 K <statement sequence1>;
B+ S$ [1 }: B elseif <condition> then
+ k8 I' e( B: s$ u" T& V7 a <statement sequence2>;
1 w* k Q! f/ B) G6 L else ( p( M9 g2 `, }8 N6 l4 q! ?% g
<statement sequence3>;! F5 v" K/ n4 O `+ i M
end;9 n @2 A7 D6 a; f
如果分支比较多，用：
- K, a5 d- v1 w3 N% H1 s( X2 Z inspect <expression>8 J' M% Q% L i: V
when <constant_list> then
$ O4 P% j$ q1 U <statement sequence1>;+ D5 ~! V3 @1 T7 J9 k2 Z4 \9 F8 E
when <constant_list> then( X! N; Y- c. g. B, ]# X; j8 E0 r
<statement sequence2>;
) ^* G5 y5 L6 X, w' S1 m: D+ r' R .... O/ K$ L( f! C
else( u3 a3 O) A( Y: w# [
<statement sequence3>;2 {7 @1 k" i( k( n& b3 H
end;
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+ T- k" |& k8 W4 _) V! B* o2循环语句
; A9 x1 k! U, r) u1 V0 q (1) from <statement sequence1># `. r8 ^7 m3 n9 V2 X
until <condition> loop: n$ b# X( I6 _% D
<statement sequence2>;6 k$ `; Q2 c& V: `
end;! e' Q6 e" l4 v9 _6 G2 \4 ], ]
(2) while <condition> loop
5 F1 @+ p P! m* ~9 R, K <statement sequence1>;& |4 M- J: F+ H$ j
end;
$ H* M$ L9 O3 v$ k* Q (3) repeat 7 E* ], \8 a$ O b* _" z
<statement sequence1>;
0 A$ x0 R1 ?- g; L% N" O" Z# V until <condition>;
3 M% D8 z6 I2 z9 t/ v' ~ (4) for <condition> to <condition> loop
$ b% I8 } l( ^$ d3 v <statement sequence1>;
5 w8 C1 U2 I( c next;
- X9 E$ J& z8 F) _5 Y0 y! Z3中断语句
_, Y7 q% j: P. i& D waituntil <condition> prio <integer expression>;
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以上为常用的函数！8 A8 N6 z- ~! ], `: J$ j- Q
还有很多，如有需要我把资料发到你邮箱里 p9 ]" B- I% R/ l/ E
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