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发表于 2012-11-13 08:48:12
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1判断语句
9 }* s! u7 u! x7 ` if <condition> then! Q( W* P% p4 U8 a9 r& k6 ]& d
<statement sequence1>;3 b+ N ~. X" [$ v2 e
elseif <condition> then3 H& [# E% I& z! W9 l% H7 y! e4 o
<statement sequence2>;
2 Q. b" W0 U$ [- a+ S! L else
/ k0 @( N! h* f2 d3 e: Y! d4 } <statement sequence3>;
+ L' n& n) E6 R9 _ end;
3 `0 { j8 I9 t. L如果分支比较多，用：
4 t" x6 |5 ~2 [1 `9 m/ t* U inspect <expression>
, E, M* D. L5 R S6 x when <constant_list> then
. A9 w& o! R* v <statement sequence1>;- {) x" H/ [# @, m4 i
when <constant_list> then
* O/ j6 `1 C9 j* n <statement sequence2>;
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else7 r- k! X! w5 b' ?2 a3 x* D
<statement sequence3>;: B+ ^# N. N, k! z9 d; I6 [
end; V9 o) h8 L P6 @! y( h
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2循环语句) a$ V l3 b* v7 n1 d2 [: d
(1) from <statement sequence1>! v. @+ L2 m6 w+ @6 h+ Q
until <condition> loop j, d: `- s% j( u
<statement sequence2>;
+ K, l1 Q8 s8 a end;# x, u6 J# C( l. A
(2) while <condition> loop
4 \- w* e& f4 M. b* ^ <statement sequence1>;: U5 A8 e6 G8 `; ` ^
end;
% c; ]) ?7 C6 ^+ u8 J h4 w O8 | (3) repeat
! L3 u8 t2 U R1 L. D$ K <statement sequence1>;
8 X3 w" W8 y1 S# }* L until <condition>;5 u9 Z0 e4 H: D" A) L% _
(4) for <condition> to <condition> loop
4 X! T+ w/ T' a1 P <statement sequence1>;; v- ]0 } i0 U3 j4 s
next;
. d1 b0 u; @' d6 p% e3中断语句
' N4 `5 _7 o- A8 @3 T1 [% m5 s waituntil <condition> prio <integer expression>;
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以上为常用的函数！- m" o# G v4 {3 Y3 G
还有很多，如有需要我把资料发到你邮箱里 4 F! j# L) i; [9 G* D5 `
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