|
|
发表于 2012-11-13 08:48:12
|
显示全部楼层
1判断语句
! R5 X" P3 j2 N' i) ?$ J; Q; B0 e if <condition> then' E+ Q3 |: z3 O
<statement sequence1>;0 K- v0 q9 t2 v8 p- V) ?
elseif <condition> then# V* A. w0 q! e! ]
<statement sequence2>;
0 b, N2 H$ u. p$ b9 ~5 s else 8 G1 F J- S$ `4 H7 I
<statement sequence3>;
' o% i* W# }) c& l end;
$ Z. k0 U. e1 H$ {& q4 m/ }- b如果分支比较多，用：
8 y+ S$ |# {, E, D inspect <expression>
' e- u9 `" U- [6 `" h- p& J# I" M when <constant_list> then+ |, y* H/ U7 i' d% T2 n
<statement sequence1>;
' s! {0 Z; K9 l7 q8 s" { when <constant_list> then
% x$ ^: _, z' a: P; O4 ] <statement sequence2>;0 g+ o% @, |+ z+ M+ E1 ~
...
3 C7 @( Y5 x7 p2 @% s$ ^ else
- n: k* |. _2 ?, ]3 J* e1 p <statement sequence3>;
* F, G) u8 A8 F2 d/ [. fend;
+ s# x7 R6 \1 p6 }* w% o- U0 o o; x; u
2循环语句
) h z: x3 |8 X8 h6 r0 K- y (1) from <statement sequence1>3 Q9 x" y; Z- ?: o0 Q0 D( b& F6 h
until <condition> loop
% l1 O% ], D- L <statement sequence2>;, E5 n8 |* J( s+ P, Y
end;
2 B+ {4 U6 s6 O; P (2) while <condition> loop
. f+ v+ [: f! q1 A <statement sequence1>;
7 y) P P$ Z% W( Y6 Y Y% ? end;
0 w( c0 x8 G. o! ]( r, X( m3 w (3) repeat % g5 S! m8 j; K& _/ H# I% M6 x6 _
<statement sequence1>;4 N: g1 b- H' _# S( U) F2 s* M! m3 [
until <condition>;
( Y2 I& e+ Z0 e (4) for <condition> to <condition> loop
2 B; }0 a% n2 a* C! d( i- K9 h <statement sequence1>;
; d X! B8 q1 a6 Z* n U next;
, H3 q! G/ E# Z7 [! v% `3中断语句: ^7 Y% f8 Q9 N) n8 j
waituntil <condition> prio <integer expression>;7 k. V7 w1 o2 j( N, b
! ~* V9 `" O6 M: H# L q5 }- Q6 R2 D9 Z1 r& V' e/ O+ i
以上为常用的函数！ ]4 W: k! a% ^
还有很多，如有需要我把资料发到你邮箱里 & F1 w% l) w$ ~ R$ g
) Q6 _% Y- ^0 r6 I1 S+ U+ a: }% I2 c' j9 Z& h- L
; h6 k. v$ T( L9 @# |& G. {- W
0 @% P! ?+ w k+ |$ k {9 q* s/ U+ L: [& [! O8 N7 Z6 B# V( }3 R
8 J; S& b. e5 h% o. t) n. _' E# O6 H
. `1 h& z1 f+ v
9 p3 a9 W7 I3 A: E" O! F( X
( J. }0 @/ P$ J( B/ y6 p 8 d8 B, G3 x1 s6 o p
|
|
[复制链接]
