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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
3 B6 Y7 {+ f/ h# M5 V. n if <condition> then
T% H6 b6 \3 G& \5 m <statement sequence1>;
: |4 `5 o5 y, K; u, a$ p" ^7 D; w elseif <condition> then8 `$ k2 s! V+ ^6 U
<statement sequence2>;
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<statement sequence3>;6 T9 ]( b! N6 n: ?& J0 _7 U, N9 _2 J
end;
5 R6 a9 I1 w3 Z( V \如果分支比较多,用:5 p9 f) y5 ^- t; _' u& m
inspect <expression>
3 L' g+ R( g" w: U4 S when <constant_list> then
$ A' i2 a: t% h3 W; w" K1 L$ H <statement sequence1>;3 Z* n: ^8 W5 A- x i
when <constant_list> then
$ R" L. g! V' N' J# ?' a, k, `2 o2 B <statement sequence2>;
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else
, z3 B( w9 j j0 E J- J) E <statement sequence3>;; e+ b! [6 c9 b" I5 P
end;
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' i& g8 i1 w: j' E2循环语句
9 p4 R4 D+ H3 Y& W3 s* v (1) from <statement sequence1>1 E- X! W- Z/ p& Y* ~
until <condition> loop) h5 |7 j$ s4 p
<statement sequence2>;5 x1 J* {: |& b/ E) v9 E
end;) g% I- P4 Z! d: j1 G
(2) while <condition> loop: y o$ D! {/ x5 g6 [1 x) Y( ~
<statement sequence1>;7 e6 p3 ]% X: [
end;
" J& Q/ i% k' _& M8 b) U; a (3) repeat
2 k4 ^, `1 W9 f9 ]2 R <statement sequence1>;
* L" } o/ X! a Y until <condition>;# Y3 r3 h( O. w" F
(4) for <condition> to <condition> loop$ b3 y$ \/ [& c$ T
<statement sequence1>;
& h% h2 R4 H* J h2 }" l next;
a3 \/ ^5 ]) }+ j3中断语句. D3 [/ `2 L5 `+ b9 _( ~+ M
waituntil <condition> prio <integer expression>;
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以上为常用的函数!# ~0 `# j, x' B$ R* Y$ V9 T5 a# [7 m4 d! p
还有很多,如有需要我把资料发到你邮箱里
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