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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
: Q2 g6 G. i/ o7 v+ c/ v3 p# Z if <condition> then( b7 r, O, \! O- w! Z4 J
<statement sequence1>;
: J) o; E; ~1 b0 ^" s: T' {( q elseif <condition> then; i$ ?- w. b& @* y( x r( D" U
<statement sequence2>;
- b; Z% \# F0 @6 G. E else
& K2 o& h6 h! l: e <statement sequence3>;2 V" @6 P3 b" |/ h3 _9 a
end;% ^6 p) o/ P+ q7 p0 m8 L
如果分支比较多,用:
7 X" c( N0 m: D9 o& W inspect <expression>9 X' D1 v( D, u* W; G5 j+ o
when <constant_list> then9 u; p9 i4 ]2 Q
<statement sequence1>;
: E' a* v) j2 |6 m6 X when <constant_list> then
1 r/ X6 P4 Y% {( Z, {3 R <statement sequence2>;
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else
4 O: R. X8 y3 e4 i! T4 x/ [ <statement sequence3>;' Y. t, W+ g: y
end;
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" L9 O7 y1 R; Y6 ^! `& {) m2循环语句% d4 M* }# x$ z* M f$ i4 @
(1) from <statement sequence1>' T( X1 H, w( o, ~+ `5 O5 ^4 E
until <condition> loop
* B( J8 T0 L( P A4 B <statement sequence2>;
; t, {% W: U, E5 \8 s2 Y0 m& | end;
- T p( f7 W3 S (2) while <condition> loop9 s2 c7 h. I$ e! w4 V( ]1 r" ]* n
<statement sequence1>;8 V; s! i. K8 O9 R/ \
end;9 d3 ~# C* R# y) ^8 w& e
(3) repeat , p5 p. E% f1 q. A) U9 G
<statement sequence1>;
! h1 r6 O3 v; H until <condition>;
* X q8 p7 E7 P+ Y" T) r# I (4) for <condition> to <condition> loop5 K0 V: |$ i! a6 r" l. o6 E
<statement sequence1>;$ l2 @9 g/ o( R/ \. d. I: m
next;
6 F4 f( x/ h3 R3中断语句
) D4 }; r6 Z, a waituntil <condition> prio <integer expression>;
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以上为常用的函数!5 G/ [4 ^' v1 I0 K3 e* L
还有很多,如有需要我把资料发到你邮箱里
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