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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
- A$ I. ~/ ?# F, | if <condition> then
7 n* t7 i% b5 F/ [9 R1 m <statement sequence1>;9 \$ ^% X/ l+ J
elseif <condition> then
) I9 [( P5 C) S) | u! {9 @$ E <statement sequence2>;" U9 M4 Q, L3 m% d, M7 I
else ! N0 N4 ~$ p" C5 d& G h1 x
<statement sequence3>;+ b4 b; x' M' p! v
end;" i/ t- u/ j1 W) g/ G# F# @
如果分支比较多，用：
+ \7 c0 R1 p5 }* m4 G inspect <expression>
; t! H: W! W7 P5 k7 z) I- Z; g when <constant_list> then* H+ M! M; c. c2 Q3 `, M1 d
<statement sequence1>; w4 M0 Y6 ~/ y! M
when <constant_list> then. R* `- \2 a, Y2 \. q, J
<statement sequence2>;
- N% C8 O8 x- w& h+ E, b) X- P/ n ...
% r% Q2 i7 K! f8 S else
/ {$ H9 z/ O; `& R <statement sequence3>;
. m/ @5 f& A8 send;! _" P/ T7 x# v" L# ~# q4 ?
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2循环语句9 D8 \4 W7 _1 \) M( G2 L6 |" z- p
(1) from <statement sequence1>6 Z( E- H: w) r5 U5 Q2 p
until <condition> loop6 m! E P: Z) }3 y( y8 ^! o
<statement sequence2>;8 G; d( q8 y, C% _
end;5 g, t" m6 f C1 u4 ^' i- n- ~
(2) while <condition> loop8 v1 U5 n. }' x6 _! \3 [! h# i8 B$ t5 U
<statement sequence1>;. K& J2 t( i C1 @4 a! [% w
end;' ]2 u7 w7 q7 m6 M0 u
(3) repeat
8 A' K. T+ C% W y; O! t! Z0 I <statement sequence1>;+ L7 X3 I9 E9 }
until <condition>;
1 @1 o* W; Z# U6 i C3 }' v+ O4 M (4) for <condition> to <condition> loop
1 w& ^" C4 `# k <statement sequence1>;
' s) r7 x3 t$ ^ x- I next;7 K% m& J4 U6 f K
3中断语句
1 v/ U K( C. x; q& u waituntil <condition> prio <integer expression>;
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0 e$ u; t+ U* Y; |以上为常用的函数！$ J- w# y8 A1 k
还有很多，如有需要我把资料发到你邮箱里 7 {# E$ U9 v+ Y/ Z0 R; D0 }/ M
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