|
|
发表于 2012-11-13 08:48:12
|
显示全部楼层
1判断语句
6 X/ H' k P1 k4 h _# T if <condition> then
! H5 `4 [+ e1 {' s, l, I+ [ <statement sequence1>;) r' x( \2 O$ I, x3 J# Y- k! g D
elseif <condition> then7 R' Z% s" u8 c4 M! Z+ V
<statement sequence2>;9 g( T6 i1 F5 I+ x! W4 k/ g
else 3 Y8 P) T0 m0 b/ p1 i5 I
<statement sequence3>;
6 A5 k& s: n7 |( F/ a, O8 T% |, M: o end;5 t7 M: |3 i& K
如果分支比较多,用:
9 j6 ~4 C$ x9 _3 U! R. G# |. d inspect <expression>
9 {* C) ]7 ]- B2 [! d when <constant_list> then
& n" G- A, b/ _$ x, f, b4 W <statement sequence1>;
5 ?9 o o* M3 @9 g) | when <constant_list> then
% }9 Z" a7 @7 g' K; {8 n5 r <statement sequence2>;0 p' O2 e/ s6 i4 Y1 n% W0 O' n$ b
... a6 L4 l- r3 J) y! M( ]: L% T& z
else
; A; [5 n( K% Q1 F5 b4 v <statement sequence3>;) R) A7 N' ]8 P$ A' Y+ x
end;$ @- }* [7 c, c! w9 x
. W, k- q6 x/ V4 ]: S' R
2循环语句
# K$ |+ X4 x( |7 B# n6 ? (1) from <statement sequence1>
+ M1 a, ^+ T$ [9 F3 B% Q/ N2 [' B until <condition> loop+ @" Q1 E; d( A" n5 ^; P, |0 [* X, ^0 g
<statement sequence2>;
9 O3 y, p3 U+ l* ?( y: F0 ], |" O end;# A5 X$ o: `/ u d( X9 V
(2) while <condition> loop) Z' |2 K; u% E! F5 a7 T1 X5 J
<statement sequence1>;0 H$ A4 z( B6 p9 b7 E4 _7 [+ e
end;4 q2 g$ u$ ]3 x* \5 `
(3) repeat
! {) U) V" f3 _2 V <statement sequence1>;3 |$ d7 I Q( s9 d4 ?2 I
until <condition>;, }8 q5 |& r7 _: e; A0 r; l
(4) for <condition> to <condition> loop
a7 {) O0 E5 |* p3 j5 r <statement sequence1>;
6 I) u1 v3 Z" R& |" u: z next;
$ @6 e) d3 w2 l0 B3中断语句/ U5 a6 g4 n. ~+ A; N& }. q
waituntil <condition> prio <integer expression>;( b% \$ }+ u+ G4 L
% }& {! u7 V/ N$ z" H* b$ V0 R7 V% W' {" T4 v0 s
以上为常用的函数!. g8 Z9 g$ p7 m7 M0 U
还有很多,如有需要我把资料发到你邮箱里
. C/ q& @$ s, ?# W: F+ Y- Q
: I3 S3 l+ D4 H5 t( g5 p. Y, C6 W! r$ x0 F( y3 ]9 p3 L2 y
7 C4 ?7 ~; }9 Y' [
% Z' M$ c5 ` A5 R! K1 \# N" P- Q ^. |3 G
9 Q- v6 o5 @/ u* g9 W8 L1 N
$ I( H& ~9 }' e% g- [8 t) J
" a% M! u! }9 m+ Q) B& x3 k! U, a; \- X3 D* b
( @2 b( _! c, i1 o" I/ X! d |
|