|
|
发表于 2012-11-13 08:48:12
|
显示全部楼层
1判断语句2 ^% V/ Q+ r% i1 P
if <condition> then+ }% v+ k% @0 W: S
<statement sequence1>;
4 O, O$ u( { Y) ` F# q elseif <condition> then
3 N* r- ]+ E8 t4 n <statement sequence2>;
# K9 g% L0 T$ i3 o) y else $ Z- p8 z. k6 U4 X7 _: O
<statement sequence3>;
: g+ B |, L% t end;
2 _* E4 b) n) `( Q如果分支比较多，用：
) P1 e4 q! j; s) e6 C, W inspect <expression> x+ ?' A/ s h4 `( G
when <constant_list> then( [* e% d. _0 H& K7 {6 X
<statement sequence1>;. ~* ]3 B* B' s1 S; y
when <constant_list> then
4 Q1 O V3 \* g <statement sequence2>;+ e8 E/ }" ~7 f0 i7 V6 _
...
0 ?3 N2 e1 K; R7 S' e( J. }: D/ N4 D else
5 i3 ?% v0 t7 A# P <statement sequence3>;) O' }/ n, w5 C7 t" }
end;! G0 V/ \ m% d8 z" E) p
* D5 O4 G( B! X; h6 Z) K5 R: C2循环语句
( l5 r( i$ ~; \ (1) from <statement sequence1>
2 i) g1 z6 g" y& q until <condition> loop' f3 Z) ` T" y, W' H- w
<statement sequence2>;* E* `1 k- P# I7 s
end;
& w8 ?" V* P3 ]8 r* i! ~: g k) ? (2) while <condition> loop- r# s' Q( } Z. ^2 Q5 ^
<statement sequence1>;
" E% a. b* c0 F7 T% x end;( U, `) S& U1 @7 c& w
(3) repeat
$ ^! ?( N- |( N! e0 b, p1 d <statement sequence1>;
* @8 G2 y, B! @( B9 I. g% u until <condition>;
- B6 k, }; c& f m2 v& N (4) for <condition> to <condition> loop
4 _: B7 K6 W* W+ t3 w1 N) @+ w <statement sequence1>;0 l6 m" D E4 s$ u; \. @
next;8 E8 z5 G; u: n7 @* a1 {
3中断语句
) {' z! D3 X0 d waituntil <condition> prio <integer expression>;# H- E8 G4 ?; M. X L- ^& |
$ c. r; ?2 t* U1 S8 l6 s
# s2 q: b+ P- ?$ i, |0 \7 }+ _以上为常用的函数！
- i+ `. f0 {# B3 H( p还有很多，如有需要我把资料发到你邮箱里 ' h' e, c2 Y) \- W2 o' u* R
: d$ ]6 P5 J. e! N- B. { j# k# C) e. H: c+ Q0 y
( _: J7 J( E. U
+ T. U' Z$ ~5 c# D2 ^. s/ }9 u: |' m* A
& d3 J) m$ O9 l* Y# h5 B o7 L9 g' J1 W4 f
- m% e; Y6 Z0 ?) K3 Y+ O k, k6 u8 P/ t. C
3 N' x$ ~* V& j
4 ~+ v& W" {5 j4 n
|
|
[复制链接]
