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发表于 2012-11-13 08:48:12
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显示全部楼层
1判断语句
6 f; b& @% Q! p if <condition> then
3 W7 {0 e! D; ~4 K3 l% h <statement sequence1>;: g3 n( C Z5 }8 a4 D6 r
elseif <condition> then" E8 p3 ~- e0 O1 t
<statement sequence2>;. q9 h, T- A& O3 e# A8 V* Q
else % y; A, `: }2 j' f/ C
<statement sequence3>;9 z- w2 a6 O8 q/ V* D. D( X( o
end; ~3 `3 j1 S: H( n, @
如果分支比较多,用:
4 {1 x; S( [9 S" A: e% |2 [ inspect <expression>
8 v- e. f' r4 d& I5 D; Z when <constant_list> then5 ~1 S8 }! \$ m0 P! W
<statement sequence1>;: b; M% {* P. s( D
when <constant_list> then: G8 L& M* M. Z' R5 X6 s+ ~
<statement sequence2>;
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else
4 _9 Z! B5 a+ m <statement sequence3>;
3 K6 h5 ]% G2 t% j% Q1 iend;# p! K+ t& }3 j9 A4 J
: @* {/ E6 g" V2循环语句- E% K) J9 E! e6 s
(1) from <statement sequence1>
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<statement sequence2>;) A% a1 j5 f: U" c3 N ^
end;
- L0 R0 B3 ]8 {8 i8 T1 { Z (2) while <condition> loop+ g- W/ q0 g7 }
<statement sequence1>;
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(3) repeat
- O4 C7 J, S& S* e <statement sequence1>;0 I' Z7 \2 X( Z6 [4 s
until <condition>;+ r2 _4 u5 C. w3 H# G
(4) for <condition> to <condition> loop
; A# t2 i a" z+ a1 Z2 O <statement sequence1>;& M0 G$ S* L; \" c9 ?% t
next;- U/ \! a& I( S( g
3中断语句* r( ~( R/ x8 q
waituntil <condition> prio <integer expression>;
9 ^8 \* C; `, a2 c# o- ^% G0 G# l; M; Y( i. }7 H
7 G6 a6 ?* P* a! Z0 B以上为常用的函数!
& i; j {% C' y5 c+ C; W! w6 u还有很多,如有需要我把资料发到你邮箱里 ' Z8 {4 _8 p# P6 Z/ }/ s
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