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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
7 ~1 i0 A; i, M6 ?: r if <condition> then3 q2 {# F) \5 P/ n8 |/ _
<statement sequence1>;
4 ~5 [% h' g% c$ e$ E elseif <condition> then
- }! Q9 A; a" c' Q# a4 r, I% K4 c <statement sequence2>;/ [# p( I! D( x2 w8 i o+ n
else + a# h2 W9 n- |" m9 Q
<statement sequence3>;; l! d9 _" Q7 }/ B/ p) [) J8 q2 h
end;
4 Z0 g) I2 l' M% _ j如果分支比较多，用：
' R3 @/ ], [: Q! m3 M! I inspect <expression>6 b( h$ g6 ?7 E" R9 A. a+ \3 ]! Y3 |
when <constant_list> then" p4 X+ _ h0 j" K
<statement sequence1>;! i+ I/ z# @7 U& x+ ]
when <constant_list> then) } Z: @" d! s% d; g! N q1 f r$ n) X
<statement sequence2>;
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else
0 Q3 f0 h& q3 O' r& S <statement sequence3>;/ M: t/ L. t0 S. G
end;; A* w1 G4 g7 v1 C6 `# n
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2循环语句
& U2 ?, \$ s3 s" E5 o& q (1) from <statement sequence1>- P% }" D* _5 V& ]5 f. `
until <condition> loop
- @: L& n$ R9 T9 b <statement sequence2>;' v5 s( H' D8 ?2 z" G7 ?
end; p4 |) o' |. K. b1 f
(2) while <condition> loop
: D5 X/ |7 [8 m& }; Q' { <statement sequence1>;: O! Z6 r7 m, W8 o# j
end;( c1 M$ Y) N2 `9 n6 V
(3) repeat ! `( |) A* q8 v/ N+ b
<statement sequence1>;
0 K. Z8 U! S( u1 D* G# G9 S until <condition>;! {" @' t6 b, N1 o! ?7 F
(4) for <condition> to <condition> loop
+ A2 w+ G I* x <statement sequence1>;
( P% e9 @+ s. h0 m6 n5 s. P( Z* \ next;
4 N2 J \6 j/ U- n+ u3中断语句
. H$ h5 S% H- j waituntil <condition> prio <integer expression>;
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" S" V4 P( b. c
3 h: \9 ~: ? f$ T4 V! M- Q以上为常用的函数！
4 }, g: E& {8 ^7 E还有很多，如有需要我把资料发到你邮箱里 2 w7 @* V N& M. p
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