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发表于 2012-11-13 08:48:12
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1判断语句$ X. v( H) P" w: c& X/ Y
if <condition> then! i9 ^1 x1 }5 C9 N+ J7 i' _4 ?
<statement sequence1>;
% c" A6 z- h3 p% e. b elseif <condition> then
2 e/ D7 \( M2 ]4 c: I8 _ <statement sequence2>;
3 O# E% D d O0 J! P else 5 [& D% x4 i+ E8 D
<statement sequence3>;
' ]. l% v; G3 L end;
! P) |- `) ]/ ]/ ^4 d0 ], e2 k如果分支比较多，用：
/ N% ~5 ?+ J2 r1 d2 Z2 T% U inspect <expression>
! K- D6 N/ \, \! Q1 @9 E when <constant_list> then
1 W. P, S5 f7 T) H <statement sequence1>;9 O1 ^, I% f4 J6 f9 X" M
when <constant_list> then
* }" K' A0 g% @, {" l) H <statement sequence2>;
5 w2 p/ ]6 {4 @7 V ...
8 l% L3 i1 B1 P' P' R( \" A else
6 X1 f4 u* ^3 o8 ^ <statement sequence3>;, s7 H* G& q2 `7 L1 i2 @8 L2 G
end;. }( Z0 J: A' S# Y. v* j1 U9 s/ B7 W
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2循环语句: n1 {0 f+ A7 Q9 `! ^) ~
(1) from <statement sequence1>
# j. H) K4 {- \% J- f+ Y until <condition> loop$ J& p7 ~* Z4 g' j; Q
<statement sequence2>;
+ S2 ~- Y$ [5 A7 x- }1 F end;
# K# n( r9 z$ G* F (2) while <condition> loop: B* b2 E& g/ h3 y: p. h
<statement sequence1>;6 V+ o* [. C. U+ q
end;1 a6 B% f. ^* {1 v2 ~
(3) repeat
1 Y) o( t( y5 A% D3 L T7 @ <statement sequence1>;; p; w+ M7 R- ^( |( q. c$ w& V! b
until <condition>;4 e2 l1 ?8 Z2 w- A2 O
(4) for <condition> to <condition> loop& |& G$ N& A/ U( J0 `9 L6 y1 @
<statement sequence1>;% k; e# U4 X* C3 ?1 Q
next;
1 x/ I* l _( a3 c3中断语句
8 X( \' {; j {9 A, ^( f# k! R3 b waituntil <condition> prio <integer expression>;2 ^' A7 L0 _, u6 w& H9 J
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$ q2 v) \& }7 N) L% k以上为常用的函数！
+ R1 o( M: T$ W( x, [) m" \) v还有很多，如有需要我把资料发到你邮箱里 2 d/ G2 \3 d6 I; {# G# Z
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