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发表于 2012-11-13 08:48:12
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1判断语句1 a8 t2 q- [3 L# i1 r% c
if <condition> then
( ?# \- {$ F7 W" W# I <statement sequence1>;
6 Y# Q1 z }' O' { elseif <condition> then
X8 N Z# @4 \( {" E n; r <statement sequence2>;
9 L) `( S6 V+ V% g9 D) Q6 k. G9 S# c) s else $ j( w$ Q% D( q9 y2 x
<statement sequence3>;
. L4 O' E" R' S) _6 U% { end;
/ A, G4 _- p2 A' _如果分支比较多,用:7 ?% M6 l& Z5 I+ v2 H3 f
inspect <expression>
' Y; q' s# y2 f- [ when <constant_list> then
8 r- F! N8 Z6 c <statement sequence1>;
8 p; ?" f1 L# n7 F when <constant_list> then
( T& X+ Z. W; {1 {* L$ P# b <statement sequence2>;# I7 e; v' {( l2 X4 x1 o' N- h9 R
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else
+ e, _( Z6 ^) d. G <statement sequence3>;- y% t5 G0 z5 U4 ]! M
end;
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' S) U" G/ h! [/ p* E* w5 X" ]2循环语句7 z; y# F% a: K a& s- D
(1) from <statement sequence1>
' h/ q5 G6 ]& o3 m I, O: B" H until <condition> loop
- k* F" c3 h& o4 x# R# M <statement sequence2>;; v8 b, O; m! h$ O( m; R0 V
end;
% S E9 [, n* m* ` (2) while <condition> loop
8 M4 Y. [! U3 N8 Q' z3 O9 o) C <statement sequence1>;
. a( i( T v! X* a9 P end;. \- o3 K/ v+ n" g" h
(3) repeat
7 j0 X6 P$ z7 A* Y <statement sequence1>;
; X5 m# {. `; P7 O% I: A, ] until <condition>;5 ?2 q g8 i1 l0 U2 O1 [/ n8 `
(4) for <condition> to <condition> loop
' K0 G" }9 T; Z <statement sequence1>;
2 P4 f: Y4 C( w2 j( c: n next;
) ?1 ~- B1 P0 z) z2 M' d2 R/ r3中断语句
* W# O# a" a9 t% y! }7 d waituntil <condition> prio <integer expression>;
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以上为常用的函数!
0 A+ N5 Y( p( m+ m3 {5 m还有很多,如有需要我把资料发到你邮箱里 `1 ?. [8 y! Z6 B" b% y R
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