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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0 z, Q9 ]; X9 i4 h5 d
if <condition> then
+ I; v4 j3 n" r- e. z7 \ <statement sequence1>;
. ?. D$ f- z5 j( ]3 q elseif <condition> then
) n, V+ `! A4 x# J; j2 V <statement sequence2>;, M" w+ _9 e, {+ A* r8 F
else
! S( w% E$ u; i n$ I7 b <statement sequence3>;
* J4 P! r2 }* A( ~5 W end;
) U- U# i+ O* @; Y- c& x% R如果分支比较多,用:
; L% j, A9 d! ^7 m1 T4 v. M7 Q1 ] inspect <expression>" j; S* e+ S5 {9 v
when <constant_list> then
0 L" R! j4 B w" o) Y7 q8 o. q <statement sequence1>;3 t* H# b* \# L. y# `* W; d' }1 ]
when <constant_list> then/ k1 x1 O, m6 `6 m% o
<statement sequence2>;
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<statement sequence3>;
* U0 d) s/ N8 R+ I- _end;
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2循环语句
/ C, H6 h5 c6 P2 R/ k% ` (1) from <statement sequence1>, ~$ E$ W# g8 i* M2 F4 q
until <condition> loop% T- F5 d9 C; Y+ b3 I
<statement sequence2>;$ u: @1 |; H0 c H5 T( c3 m
end;
6 i( l; z3 R. ?3 \. a (2) while <condition> loop
7 ~4 }+ d3 {$ g3 y <statement sequence1>;& }- _( n T) |# O1 `
end; D1 Q9 e1 e/ D* n- x+ a: {
(3) repeat
% q9 m' ^3 V7 T <statement sequence1>;
! P) `& _7 n0 k! E: x) F until <condition>;
7 \5 L" e, u2 h' a+ S (4) for <condition> to <condition> loop
! M7 U8 q, b, y$ }- W% f; c <statement sequence1>;
! _1 {# T$ o. s4 W next;* }9 h) s3 J3 V5 q( A
3中断语句3 l. x! E. E1 e
waituntil <condition> prio <integer expression>;) R) x8 b8 ]5 C9 D
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以上为常用的函数!
' B# x; e6 p# `( X) x8 s还有很多,如有需要我把资料发到你邮箱里
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