|
|
发表于 2012-11-13 08:48:12
|
显示全部楼层
1判断语句
% e" w u$ S' _2 l if <condition> then4 e6 e! S& Q- Y2 H
<statement sequence1>;
1 s1 @! W& ^: K3 o1 @8 h elseif <condition> then( p2 J$ [' J" V6 ~4 `8 N$ z) i; s
<statement sequence2>;4 ^1 T4 i* N, a; |9 K
else
' _( H. g5 F* ~9 z: f" U- | <statement sequence3>;
/ e. x2 e" j4 g" @' ]) J8 E7 T% E end;
, ?6 y1 v' |0 Z' l4 t如果分支比较多，用：
, v; Q& m/ p E4 {" w. \' T0 ~ inspect <expression>
& @% H7 m' Y- t* h9 D when <constant_list> then/ x9 ]& t# r# n" f
<statement sequence1>; T: b9 P9 f! P- N8 U1 M
when <constant_list> then6 _# x) H# c' v, e% W: v
<statement sequence2>;
. t _% h1 V2 b7 h( x ...' B) h* r; c. p+ I# D7 V
else- q* K0 ~+ z( k5 F! `) j/ u5 {! `! Z
<statement sequence3>;
; p" v# X) Z- x* D# J) n% Cend;) i# H# i |5 Z* A5 ?7 o
, v5 M% k v. S/ U' ?4 B6 [2循环语句( H. f% J3 W0 J) \) f
(1) from <statement sequence1>: _, W3 Q# T& t, ]
until <condition> loop- l* @0 @- i7 q5 }% j) U
<statement sequence2>;. N3 h8 p! e" W+ [0 {% K/ m
end;7 l& C3 i8 A, o7 w& l1 G" c( n
(2) while <condition> loop
; [6 }( U$ i% T$ f% w <statement sequence1>;- g. @% N0 d( W2 ?
end;- F9 F6 p; T7 Y: f! l0 J
(3) repeat
7 R3 U6 }. H! U u# z <statement sequence1>;/ o b6 Z! q* j, P- S0 K$ q+ i
until <condition>;
! x$ u4 m, o+ d8 y2 U( s& M (4) for <condition> to <condition> loop
; M3 q6 i/ [: A4 l) w( _ <statement sequence1>;
$ h2 u2 A# V9 o" N6 J0 F8 { next;
6 s9 _: e$ i: w3中断语句
: G* c/ W4 h8 h# r3 ^2 ?; D waituntil <condition> prio <integer expression>;
* W5 m$ \' [1 T A% w" f8 T4 O; `- ]' \6 D- g* \
! {" o( |$ Z' X7 v: v以上为常用的函数！
' h" k; m x7 I M还有很多，如有需要我把资料发到你邮箱里 . Y, y+ r. [' K* D
. v$ U( `* d+ d
$ Q- u8 x; I5 X) l8 d" Y& k: s0 Z' Y3 c- E" E, C- `
3 u2 o+ t' a7 X$ W: }; D1 M
: j R4 Y6 Y( h3 s+ h5 ] r$ z
8 ?! L8 ?& h7 C0 o& X. {4 ?
7 {, w6 f' \( H) i _# q) _2 g+ h
* S0 W& G1 I- c; r& [
) u& i- T5 q0 n1 ~+ G$ `
/ B3 b; _0 ~) |( P$ X5 } |
|
[复制链接]
