|
|
发表于 2012-11-13 08:48:12
|
显示全部楼层
1判断语句+ _+ e" O! Z8 |- \7 C' h) S
if <condition> then# D1 A5 ]9 ^3 Q* a/ _' t* S
<statement sequence1>;
7 f; R U& Z3 ?) E$ T. U7 W elseif <condition> then
% C4 O+ N7 j7 Y3 S F <statement sequence2>;! z( Z3 _; \7 O+ a1 q/ X c
else
5 w# G6 n Y8 ]* c: i$ p <statement sequence3>;" Q6 U( b8 i. @$ i* D" ~
end;8 p6 I) {! X6 ^6 U& ]
如果分支比较多，用：* H& @* m' J( r
inspect <expression>
. T4 b, w1 L# x2 G [$ g when <constant_list> then
, Q' E9 C( ?, _; d <statement sequence1>;
8 F0 h2 M' Q& X2 S+ f when <constant_list> then
1 a% @2 h( a9 N# d! q/ g* L- v <statement sequence2>;
1 n& }! q$ d& [4 p8 @: m' P# _ ...
5 O0 a! g) N7 G. z$ @ else
9 ^3 _0 C) C7 b p <statement sequence3>;
8 M$ Y5 b& {& x$ ^end;
; F d. c8 {4 v0 W$ N& ^, V: F0 a- d+ n% A
2循环语句7 n3 n u5 m) x4 S* c
(1) from <statement sequence1>
! e0 R* {9 z5 A& |, n$ H! s/ J6 r0 A until <condition> loop
, q/ j+ S* z3 P3 |9 } <statement sequence2>;" i% J; z! R- n8 ?9 ?6 |" P
end;
. ^7 q' |2 ?5 O, R3 U1 t' z7 a' b8 b (2) while <condition> loop& l; V' `* g/ h" o; E2 o4 s5 k
<statement sequence1>;( H) Y% p( _1 j- [
end;
1 }+ F! q1 F' p+ w (3) repeat
' i! A5 G" t- m3 u) H <statement sequence1>;
; g+ y$ o1 a0 g until <condition>;. [: }7 t( F) D" w% D+ B" P
(4) for <condition> to <condition> loop
/ P9 z% ^& D l, z% V# A" ` S; S o <statement sequence1>;
8 X2 R/ l1 R/ ~/ S; o7 r$ W next;
6 C3 f2 S+ o- D' w# t. i3中断语句: r" n0 h& B7 n1 t7 [( {* y8 R2 E
waituntil <condition> prio <integer expression>;- h \ B6 i4 q w! q0 O
; W, I' e: F( ?1 C0 c0 a2 `) \4 D2 g9 a0 f3 g" t
以上为常用的函数！
, o2 O8 M) ^2 J$ L( X6 { w还有很多，如有需要我把资料发到你邮箱里 4 e) R, u; n! ]6 |; w9 F
, p G' j/ q; F. ]
: a5 c; {* k2 g1 f
: P# |; Z; }! `& D2 }0 z3 M
5 g+ `2 ]- I0 e( x# n- B. ?& k
], m( f* \4 ?) b" u, K5 f1 ~: e' ~: P7 k/ T* z* m" _3 E: u
7 S, G6 C2 Y1 `+ Z G5 z( d
' z" i' E4 | c* X
$ f1 p' V+ J8 M1 i4 H# g
6 J0 s" P. }& I5 W9 K# N
|
|
[复制链接]
