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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 T$ c! ~' }% h) x ~7 K( M* t8 L2 g
if <condition> then" |1 L3 |8 S4 c( v- Q8 _. h
<statement sequence1>;$ F$ |. A- q! O. O: V4 w
elseif <condition> then; M8 A8 r2 f) Z* |9 W& j
<statement sequence2>;( V, e* x1 r* O) d
else $ ~" r/ o8 v, H( V
<statement sequence3>;4 J9 o: n* b7 _5 x: Q. j
end;3 D& r( P0 ]! V% Q+ ?8 f- e: T
如果分支比较多,用:
- q3 o: L& _ R, @! P9 _+ A, \" D inspect <expression>( _2 ~* ~! c/ f/ L! h$ j( q: \
when <constant_list> then
$ K8 a, b1 c& `# I1 a <statement sequence1>; Y3 s/ p- R$ N8 \4 ]: B1 U! S
when <constant_list> then3 W6 V* @" y/ A0 k1 Y% s6 E! @
<statement sequence2>;
+ e4 M0 Z" [. M4 u6 X ...
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<statement sequence3>;* r( S2 `% T0 ]
end;
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2循环语句
* H8 t. s0 |, O6 {; D (1) from <statement sequence1>
% | X% _) D) u8 Y- } until <condition> loop
: |" A! Z3 j; A4 n* N7 W <statement sequence2>;' c( F. V/ J9 _# C4 Q- R# G
end;
0 r1 i* w ^2 } (2) while <condition> loop0 y& n: a. ]0 C+ U: m
<statement sequence1>;0 V u+ P8 J# S6 T0 Z0 @( g- [
end;
8 `" \# @" l# V2 R (3) repeat
3 h' V% n$ e# N# d <statement sequence1>;3 D% L$ }! l3 D, a; r. D$ ^% N
until <condition>;: k h4 R Y& [
(4) for <condition> to <condition> loop
1 R9 m. O3 n+ O# |& M a: m6 Q <statement sequence1>;
* X4 v s! N5 a: T next;* N2 z9 D4 c, R4 J2 n9 W
3中断语句4 \! ?* P4 F# Z+ t- Z
waituntil <condition> prio <integer expression>;
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以上为常用的函数!! ]3 S3 O2 V2 E% F8 y' g
还有很多,如有需要我把资料发到你邮箱里 2 C, O% b- ~! @) \0 F
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