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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
0 I, L% Q6 h8 { if <condition> then
( s3 E2 G" c9 ^, ?2 H <statement sequence1>;& y) w. ?: l# u% m% g; G
elseif <condition> then
: ]0 U! F9 F2 Q3 K/ ]0 v <statement sequence2>;
. U0 P: H9 B( ?2 Z2 \ else ' m3 _" i( K3 g, r" t8 y: Z
<statement sequence3>;
% ?- N# p, J: ^* t end;
2 v( U/ n+ K# P4 }如果分支比较多，用：3 d( J, R5 `4 n6 ?% A1 P m* W! ]7 a
inspect <expression>$ [7 c, e, A5 a4 @+ y) }
when <constant_list> then) b! Y( {1 d% H
<statement sequence1>;
% h- M: }7 H' u when <constant_list> then
# u, F' W' V; t! e' Y! E1 J, I <statement sequence2>;
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else" w0 b4 ~8 L0 x9 D" Q; A; j
<statement sequence3>;9 G& K: T! P0 h% l+ w* p% b
end; c8 q! r/ h2 ]% M2 \/ P
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2循环语句
% d3 s/ h' }6 r# I (1) from <statement sequence1>
% p3 O& N u$ _! U until <condition> loop0 Q7 Q: b" h K4 W% Q
<statement sequence2>;
# O/ i3 } _! o5 P) C' i end;
( o8 w5 ?, a% j) k (2) while <condition> loop
7 t7 ]1 |6 L, F <statement sequence1>;. E& a- W* w- c8 G( Y
end;
, J+ \5 ~5 `* e% \8 K" D (3) repeat
4 d' K/ h7 F3 F# m1 }4 N <statement sequence1>;1 R6 {) M a" c/ p9 r. }+ A
until <condition>;
& i& n$ q! ~+ }1 o/ q (4) for <condition> to <condition> loop
7 s' |! X3 G' _ <statement sequence1>;
% V& W7 L+ b8 e* p4 w next;
) b! Q6 z! L/ D3中断语句
/ T4 e8 ?7 V+ F; B& F5 b waituntil <condition> prio <integer expression>;5 }( U! t4 ~: ~7 X) s
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. W. c. j9 p* B+ s5 B以上为常用的函数！9 {, u0 [0 O- H$ ~. Q& ~' R6 o$ v9 s
还有很多，如有需要我把资料发到你邮箱里 9 u( S9 H) O' y
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