|
|
发表于 2012-11-13 08:48:12
|
显示全部楼层
1判断语句. g/ [- @+ S+ ?1 M M( i' B( t3 ^
if <condition> then! X% s6 }/ ^/ O9 D( k3 v, v8 E
<statement sequence1>;
8 o; P/ |& f6 S& N) O6 u elseif <condition> then k! }0 f3 d& m& Q( B5 _( Y) ~
<statement sequence2>;
. x; U6 i M. O/ ]# k# |5 Y else + \0 p+ R& D1 B4 R( x
<statement sequence3>;
2 E$ p" c0 w: q: J; ?# {& n end;7 |+ v9 H& C8 T8 @& c
如果分支比较多,用:+ y- ]$ F" H3 O& P& U* Q/ \# l6 u
inspect <expression>( n9 |; q" u! a/ |6 z6 V
when <constant_list> then
; {5 K$ ?0 Y* N <statement sequence1>;
6 F' B: Z- i: `/ q! |% }( r# a, n' S when <constant_list> then
2 B1 _$ e0 Q3 f8 D7 @) E' R0 p <statement sequence2>;
7 W& f. [/ T; M2 [- i, ] ...
% b0 ^1 r* w' d4 C else, O2 t) K9 T3 e, \- d
<statement sequence3>;$ F. L9 M! U' O! |9 ?: I
end;
5 T) Q/ g( {% b; T
- }) M- t Y! ? F2循环语句. |+ z9 d% ]+ Z$ t$ m4 y
(1) from <statement sequence1>' O" R' n1 v0 {3 e8 l6 K# Q
until <condition> loop
4 h- n1 o" p8 ?/ h- Z <statement sequence2>;
6 d! Z5 q: z t: Z# G end;
- g! M: R# P4 R9 w1 U9 G (2) while <condition> loop
, C2 g+ X- I9 a! r1 U' F4 p; { <statement sequence1>;1 c+ ^& W/ O& X
end;
. K- g; a1 `9 g; K (3) repeat
3 m9 \: ~/ \8 N% ?, m <statement sequence1>;
6 C7 m' O5 N# K7 [2 E( X% V- ] until <condition>;
' y# l5 r; g) ~8 m' Z: E( h (4) for <condition> to <condition> loop- z+ }0 | _# F! j
<statement sequence1>;# h' V& B1 y' U) B4 p, U+ ]) z
next;9 J5 Q% {+ W/ E7 Q/ q. ~ S2 f7 V4 K
3中断语句
% Q# V4 r2 B& ?. H6 ~% ^ waituntil <condition> prio <integer expression>;
7 q! `% h) ~1 V. c3 X. A' Q
5 C( ^6 C3 a# l6 `. [; u+ S9 i7 @( Z; x3 I1 q- t; ?6 n: A
以上为常用的函数! I/ @- B" D" N( a6 V' p1 T
还有很多,如有需要我把资料发到你邮箱里 1 L( R+ b7 z/ `; L* q
$ x W5 {& |/ a. c
, y" @4 v( o& d2 B3 n% f
, r1 q3 ~; _( l) D6 {7 w3 g, C / G1 J$ T& u8 k7 h
7 H6 k; E/ ]( g/ L1 K
0 ~9 }5 R' a/ y/ A1 V- S* |0 _% E, M$ m6 b, O; M0 ^
9 [4 n" y; j0 w" C7 k0 A( q
2 r4 e3 l) {8 J f A) z) \. M
2 i; b! n, k" I! R4 ]" T |
|