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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
& e, ?- A: r2 {- T" Q* W0 k4 C" N if <condition> then
3 P" @$ L, k, r1 s/ R0 E# A3 g4 i <statement sequence1>;- V- `/ |, g% Z. f: b- F' g
elseif <condition> then
$ q6 ]+ Q. J; j <statement sequence2>;5 R; ~7 ^5 g5 G& H
else
1 g8 b, g6 c: _' s# h0 e <statement sequence3>;; N4 D) U' K" N$ R% J; s# X4 ?7 A1 y/ @
end; O/ i+ }2 U- U/ C3 R( f
如果分支比较多，用： x* x7 G F7 R. g. x
inspect <expression>
1 i1 M" ^; } T- B when <constant_list> then' b2 W0 v1 h2 m/ {8 s" F
<statement sequence1>;1 |# D" }( ~" C2 i3 B
when <constant_list> then
1 n$ w. F. U: \3 E <statement sequence2>;* r5 s8 p9 H7 a+ f* m% o
...
; @1 x7 V8 `- M- X) y7 C' X$ r, m' T% F else
4 \, t V) N7 j) w( J& ^ <statement sequence3>;
. t) } a9 I; r. `# c5 Jend;
3 R( a9 X/ {& P u0 |; U- C6 B( P& h2 @8 S+ h0 a3 x( w- _
2循环语句
1 M" E2 Y: v8 q/ m (1) from <statement sequence1>
) p: n2 f4 l5 m9 B until <condition> loop" i; n; e: e1 r* ]0 ~6 v' }
<statement sequence2>;
0 {" B% a4 F5 t2 F" L# P end;
4 U) V3 x' E# q7 x& I (2) while <condition> loop
; [( D0 U0 G0 h J! `) D& b& T. H <statement sequence1>;
$ X5 m; V. f, [, v$ u7 h& ^$ ?8 ~# y end;
! Y: E J X3 R# L (3) repeat
- r: `2 h4 N& [ d0 Y. g <statement sequence1>;
1 v' |: G( I, W4 q+ R until <condition>;
5 ?# R+ n6 T4 P+ U$ d: m (4) for <condition> to <condition> loop
) H7 b0 T8 o, k5 { <statement sequence1>;' v q, Q3 f' j, W l4 [7 c
next;
! X2 Z" x4 _% M3 H' \- N8 t2 P H3中断语句
. B- W: I# ^& |2 U+ k% W waituntil <condition> prio <integer expression>;+ m8 L Z6 U; D0 b. Z+ |/ U7 C+ S! b
9 A' L9 ~' ~7 B4 ~
$ j9 S- x2 e2 p* f: a! m6 S以上为常用的函数！
( d9 z# n& W* D' i还有很多，如有需要我把资料发到你邮箱里
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