|
|
发表于 2012-11-13 08:48:12
|
显示全部楼层
1判断语句
% g" p" O3 h8 W4 y5 b% v1 u" h if <condition> then
/ \3 Y3 J [5 ?4 D8 E( `2 }$ w d <statement sequence1>;
+ s9 k- i7 P; l: @- K8 b" p+ h1 k elseif <condition> then% `7 Q. w ]6 s; M' e8 T# v
<statement sequence2>;
. R: J% k) ]7 g1 S b5 l else ; S( b) M0 V/ d g A; D
<statement sequence3>;
3 d! ?# Q2 e6 n( Q. `% V end;# k; Z6 O- s1 U! Z) L
如果分支比较多,用: Y$ l9 ^ R! y7 t4 I. l4 E
inspect <expression>
" ?7 C2 u8 }( P" w% ]' k3 R when <constant_list> then
8 H: h" O- S3 _' |+ G+ D <statement sequence1>;
, r+ Y4 _" O' H0 n# B9 q! H5 Q when <constant_list> then
' v; S6 n+ v4 j5 ~$ C0 ^: D <statement sequence2>;
% Q# t. h& j0 h; g6 K7 \) z, W ...
0 e" ~& Y$ X" ?" \9 v3 l% e2 r else
" N: P6 c' C6 B2 K! w7 Z <statement sequence3>;1 ]+ o# Q- u' P/ s) V6 `
end;
2 A% k" z% o4 k, C% s
2 W- W$ t* v( z' y1 R6 A2循环语句
# X6 {8 [: E4 Q0 U1 ? (1) from <statement sequence1>
* D5 n. y- c$ N! m until <condition> loop
$ T# H) y) b) n9 l3 i2 ]( f- N; p5 W <statement sequence2>;2 j- a+ }, V; `# U( s- J1 M& J
end;
, `* w3 q6 k# i: t0 X, c, Q+ u (2) while <condition> loop
( H& O8 f9 F) q3 x! {6 T" S <statement sequence1>;/ D4 o0 A; P; m' O. S! G* L8 |3 O1 ?
end;
" j3 X4 A1 F% }1 q- _ (3) repeat 6 D! {' d5 i( t
<statement sequence1>;
& \6 ^/ h. s* _$ J! d until <condition>;
: h5 p$ q8 V1 S (4) for <condition> to <condition> loop6 J5 r i8 t6 I' Q: H
<statement sequence1>;
! e8 x* y& |: `- A* s% c next;
3 Z- J- p7 q4 k8 q5 w3中断语句
( g; Z- ?. v1 X waituntil <condition> prio <integer expression>;
6 M+ Y! B% w2 ?( M0 g) G' i
: t, C/ C& q7 G& x; }9 K4 H8 z1 r5 B Z! C$ L+ p! |
以上为常用的函数!( ~) A, \3 f o6 ^* s% U
还有很多,如有需要我把资料发到你邮箱里 / ?7 [2 z! D* t# Z$ c
/ j, J" H0 f4 |# S) M& E y/ p3 e ]. i k# D5 {
7 V( N0 Y3 G0 [6 s6 y+ q7 f
7 r" v; x+ x( A6 Z# X% ~
" F) k: C C" z1 x# P O6 c- n/ ~: `) j' j6 ]8 f
$ P' x/ Z1 U, g: q! h, N2 E4 U4 W1 {: I! U% k7 n: M/ N
1 J; Q" \! U: k8 {) U
/ p( p' G/ x5 W! y |
|