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发表于 2012-11-13 08:48:12
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1判断语句
- q1 N4 }. c/ h& |- ` if <condition> then
! A4 V E: C6 k" C; w. u! u <statement sequence1>;# ]5 p+ H5 j3 u4 }
elseif <condition> then
7 B0 c0 j9 _" A5 o <statement sequence2>;
! O f- z) M; n& [% e else
% t/ m9 X: E0 @8 c; ^( A <statement sequence3>;' U& c* K8 v2 u- e. x B, f
end;$ ^. M6 u. \& Q) c% z+ q
如果分支比较多,用:
- l* ^. F( I; c inspect <expression>: V! \$ M# A/ P, E& ]5 p
when <constant_list> then0 b- X# h# K3 i$ G7 @! ?
<statement sequence1>;
! g" K9 G; Z3 T8 g9 x3 R when <constant_list> then
9 L, P- |1 _4 r. y& O$ ^6 r <statement sequence2>;
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else+ k( U7 g% a% L- P) ]
<statement sequence3>;
- g3 L& v' v+ _! Jend;
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, Z- \0 }% I5 M1 k4 I: u2循环语句+ c! U% d1 P* S3 h4 \
(1) from <statement sequence1>
3 X) ?: B8 y. ]$ [9 C until <condition> loop
* x9 D, c; T. g <statement sequence2>;
4 e' J+ \, N z6 ^0 W ~0 Q end;
4 e# `: D0 l4 L" h+ M (2) while <condition> loop/ O# W: {3 L% O% n% Z' m) E# K
<statement sequence1>;
& u) k) M4 C: c/ ~0 r0 N. p end;& Q1 i/ [4 v2 D
(3) repeat 3 r Q- ^+ r' h) y. ]9 q2 C
<statement sequence1>;
7 K3 n* i7 O8 j, `# ]6 [# a until <condition>;
9 e9 r5 d$ W- U+ {0 [ Y7 i5 { (4) for <condition> to <condition> loop
+ ~! H) {# E) C <statement sequence1>;# }5 W9 W: ]" L0 m- W/ c
next;# s/ k5 V, z* ^+ {5 h
3中断语句, O+ h h& V4 B) z2 C2 l
waituntil <condition> prio <integer expression>;
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5 L( c2 `. a) }! q- |以上为常用的函数!
( W* x% p, b0 g/ E3 O" J还有很多,如有需要我把资料发到你邮箱里 9 P8 P7 i- F3 l; f
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