|
|
发表于 2012-11-13 08:48:12
|
显示全部楼层
1判断语句" M [8 W1 _& R- L9 R
if <condition> then" G. \$ W Z+ d" i
<statement sequence1>;
0 z$ z0 r: u( | elseif <condition> then4 \( x# W" r/ W) E
<statement sequence2>;
2 t8 E! f/ C. p3 O( [; j1 A0 G else , }1 c, C# Y6 H
<statement sequence3>;4 s: z" F5 V* x
end;
$ G* L3 e" Q0 P如果分支比较多,用:1 h \& \1 u4 y' Y
inspect <expression>) ^' R6 y7 i$ W" j
when <constant_list> then
5 S, b* i4 }4 J( E+ T" g <statement sequence1>;0 ^ m/ a3 h( j, |3 O1 \& ]1 E
when <constant_list> then, {0 B2 g- [6 h( v" q4 k
<statement sequence2>;
" H* T: i4 ^$ e( v: c4 C ...' ?6 y4 t2 K2 I9 ?/ \5 j" u- X* p
else" d& {0 e/ Z% E; }0 I
<statement sequence3>;: C$ @5 W9 S. S" E% C& o3 t1 e: a
end;# ~* x4 L# S U/ G$ t2 b% g
" Z7 J O0 K' T% w7 ~! r( L
2循环语句
1 _7 ?9 c" ?3 ~: U+ A/ S (1) from <statement sequence1>
( `$ Z1 `- H5 E4 x! ] [ until <condition> loop
' D8 m/ c9 F! D6 H <statement sequence2>;
6 k0 x: f/ }" k# `1 N- E end;8 s5 p6 h/ r7 j" q6 @' _# Y5 w2 A
(2) while <condition> loop
7 j: }7 d2 z+ ~8 x! k) \% A9 d <statement sequence1>;' e! T( z. E$ P/ A( e
end;
L+ }/ _6 v( y- U (3) repeat
. m% h3 N7 G9 {4 g8 a3 s, m <statement sequence1>;
7 V/ M1 ]4 `7 g; ^2 B until <condition>;* R6 @- u/ K2 W; w/ [3 [1 v' ?6 S
(4) for <condition> to <condition> loop( Q! s* Q/ \7 D% s
<statement sequence1>;3 l/ O: [/ L4 z/ E( G
next;$ V6 l* u+ J. h* p6 l
3中断语句. l/ M/ h8 H+ v. E! S5 ?- V4 `, v
waituntil <condition> prio <integer expression>;
" i, D4 V6 m3 M% R; g5 A0 C* L/ R& s* w7 ^2 R
: n- ~1 s4 t+ S5 Z% m7 q# Q
以上为常用的函数!
: F" L/ x# |. L4 X6 B( A还有很多,如有需要我把资料发到你邮箱里 * y( J2 ]8 r! S; S! ^
- i7 n/ w. Q5 C: t! ^ D. p& W. q
$ p. g4 n% K9 _' g" L1 I) |; G, S, o: f0 U" d0 n6 N9 [
4 M8 x$ ^. o l. t1 _( ]
! F+ U- K8 f& r; D: A
d! a y' R- C0 F
z) `+ y2 g* Y* }
( k2 d) Q" f3 I7 k5 J
9 U3 L; k- V, J3 q. _ 6 \0 p r. d. C
|
|