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发表于 2012-11-13 08:48:12
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1判断语句4 \/ o8 f/ w8 K* M
if <condition> then: R& f! a, p, F" k
<statement sequence1>;
; s8 t+ b3 e A+ n$ J elseif <condition> then
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else / r5 \! M# Z7 ~+ P' w
<statement sequence3>;
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如果分支比较多，用：
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when <constant_list> then
/ ?) }- Q/ |- U( H" r <statement sequence1>;
9 R$ ] z' ~$ d( l4 B when <constant_list> then* q& n. i g' T3 D
<statement sequence2>;
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else
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end;
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2循环语句% `3 B1 h* d5 N: I/ t
(1) from <statement sequence1>
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<statement sequence2>;
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(2) while <condition> loop/ n! Y* m; V* x
<statement sequence1>;5 C1 D5 x0 z) n3 Z6 }" q
end;
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<statement sequence1>;
3 [6 F$ ^+ r, ^% x1 ]2 F* Y until <condition>;2 ] F2 Y2 A' D4 G( }, x3 ~
(4) for <condition> to <condition> loop
5 k; |% F( W. t! f <statement sequence1>;6 U7 g, W: P; d8 F- B
next;/ I/ v! S; Z6 D# Y( \9 V4 s
3中断语句
o) Q* F+ ]1 t4 E# T/ O waituntil <condition> prio <integer expression>;
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: U a$ u: b+ x" \+ e& e以上为常用的函数！
& [. H& H) |. ?$ X2 Y2 ]还有很多，如有需要我把资料发到你邮箱里
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