|
|
发表于 2012-11-13 08:48:12
|
显示全部楼层
1判断语句: V9 u. ^ S# \1 o
if <condition> then' P1 x% {/ C/ A; s6 q: _6 e
<statement sequence1>;4 L$ o4 k7 U# ]0 T
elseif <condition> then
$ |! [9 K* R" \% D7 l2 J3 t <statement sequence2>;
7 v# R6 P# O# J- g4 l! K5 D else 4 W O! J8 A5 L
<statement sequence3>;
* U6 [/ @ u& o1 r end;6 s9 t' |4 L6 O9 Q8 r/ t
如果分支比较多，用：
) ?4 t1 t* a P! l8 V8 d inspect <expression>
7 o5 I5 U/ H% |0 j when <constant_list> then
0 s* W9 P- U' V: w7 Q( | <statement sequence1>;9 J& t- J' Q$ ]! x% G
when <constant_list> then
7 C# |* L! Z3 j( t: ^0 b <statement sequence2>;
; ^" _6 Z' Z$ x; i& \: `, W7 D! i$ T5 x6 p4 i ...
% l f8 E; Z r4 j else
5 G" z, \& [+ e' m, r* H" Y- Z <statement sequence3>;
# j! W# D5 G8 Z: @ e. v% qend;6 ~/ J1 D: y V, a8 [) J: K+ a0 a6 F# \
9 M8 t6 i& f6 Q4 A2循环语句
8 v0 B0 }; c/ L (1) from <statement sequence1>
2 E( J# w8 g5 q& C4 ` until <condition> loop
& w# p# n9 I8 v$ G4 K; ~2 F# s <statement sequence2>;
0 e3 x% X, P2 X/ \+ `/ p8 i end;- x+ Z; a( `% p1 E! W. Z3 O
(2) while <condition> loop
2 ^! k+ z% F9 s' O/ o <statement sequence1>;" @9 K# x% {) z6 o5 U1 W- u! t1 L
end;
+ @9 }2 o) O- |3 B7 I( c+ ~ (3) repeat
# G1 \: V) c8 u# t: u3 a6 P <statement sequence1>;
& _9 Z! ?% ~) E6 z& H/ ~ until <condition>;- A, ~) ?. b- ^" l# f. n
(4) for <condition> to <condition> loop, E6 H$ N# W# s7 l
<statement sequence1>;3 r2 J" T) C2 l, j$ h9 E0 `5 ~
next;
_" t9 A' ~. O M6 U1 Q8 _ r3中断语句
. ~& ~3 v: C! m+ I1 S, |( Y: z0 @ waituntil <condition> prio <integer expression>;5 q3 g' i1 `4 H
6 A. Y t; F1 v2 f6 R5 w7 l
* A6 w1 x6 {& V; ^# _/ D- U0 a以上为常用的函数！
& K$ U. `; P/ j$ e4 r还有很多，如有需要我把资料发到你邮箱里 ' e6 ^& v/ K2 u9 w& A6 J
. ` N3 i" w5 S3 x# X6 A% ]; n
$ C/ t) E( _* V
3 {* ~3 i; L$ Y* }1 e# ~) B
! n( h8 v$ }2 D A- _! @2 c2 n* U9 S
$ |' h1 i( `: K& ?; l' c% s- P1 y2 S2 Y2 Q
/ A B: v) k0 R* Z1 Y k, |5 i
' X1 C+ p; }# R$ L6 x% t) X7 y
9 Z G+ q. i- [: p# p |
|
[复制链接]
