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发表于 2012-11-13 08:48:12
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1判断语句
8 F/ o. U$ u7 S& _8 b9 R8 ? if <condition> then0 b$ g$ Q7 O% T: o" s% W2 ~) _
<statement sequence1>;5 d! i' }0 R. D% T2 D$ ]3 m
elseif <condition> then: b, G! d1 X* s2 x; ^* g
<statement sequence2>;
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<statement sequence3>;2 x, Q2 \6 d9 a3 J9 J7 J
end;; I, B4 m( _9 {5 O
如果分支比较多,用:
2 H4 i0 x; {8 n/ I i% {+ t& R7 w% s inspect <expression>8 p, E& B3 ?: M4 N. b- J0 k
when <constant_list> then* K0 I( z& @- Y4 u
<statement sequence1>;
. I; ?4 G4 ?2 C' M# E9 t5 i& d when <constant_list> then
; f3 U4 r4 s2 V1 R1 e* C9 e6 F <statement sequence2>;
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else2 G3 d' k" C6 j& ?, {, M
<statement sequence3>;
$ Y9 k7 W" B2 g/ k* P; w! pend;
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; J7 r; F3 G/ E' ~% H2循环语句
9 {1 k6 A v$ J0 J* P (1) from <statement sequence1>. M( y: k8 I5 A6 O; x
until <condition> loop
! O: T% U8 i8 g% s& m4 |+ t <statement sequence2>;
& A; B. c5 m+ h% f end;
. z8 Z4 E6 d& N& _- S) M; C) U (2) while <condition> loop" x8 D0 a8 J! J
<statement sequence1>;* s6 m8 U! X+ m9 w3 b( C
end;: a0 T0 r5 r# p7 F
(3) repeat
9 ^) I0 Q. o9 K1 ^" l <statement sequence1>;5 H+ u3 R. N$ M
until <condition>;
J" U4 A- K5 [5 M) E" J6 o (4) for <condition> to <condition> loop2 k V j {1 f: ]: O9 M9 x
<statement sequence1>;# w+ T' Q; k8 z$ t# ]+ G3 @9 Z. |
next;
5 ~6 F* p$ F3 |- ` [9 X* i4 E [3中断语句
$ G; N5 O1 m3 P. X waituntil <condition> prio <integer expression>;
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以上为常用的函数!
+ Y( p+ U: c& Q" `/ i" u$ {还有很多,如有需要我把资料发到你邮箱里 4 h- @8 ~- T/ k1 q6 R! x
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