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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& z& b" w6 ]2 \5 O8 E. I( F
if <condition> then
# j( v8 @7 @9 y( [ <statement sequence1>;1 r; x# x1 a" ?, X* l7 m
elseif <condition> then: a$ \- p9 D, i3 R( d) @
<statement sequence2>;" l- e0 O& f J* {/ _8 F# z
else $ y, j$ Q6 C6 j4 p% C2 H
<statement sequence3>;1 j0 v" @! N N9 F0 O/ @ j4 V3 _
end;
: C' g; P' \7 ]3 F2 n/ v如果分支比较多，用：
) W- J+ u& K- i, Q4 }8 I inspect <expression>
/ `) z$ [" k q1 V) A, ^ when <constant_list> then; Q( [/ ?! J4 K- W* c8 m
<statement sequence1>;, U# i, k( h+ ?$ O/ U
when <constant_list> then2 r5 v* O: a3 M; [5 I' j5 r
<statement sequence2>;
1 G) J& k( j$ F7 G9 d ...
& v/ x9 |- \2 z else
4 c3 r/ h0 g& J8 [; v- t <statement sequence3>;$ v# |& y! z. i; B4 x* W/ p
end;% d7 B: {/ v4 u0 C% Y* ?# l
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2循环语句
+ c. l+ O7 x7 s! t j: G. f; R (1) from <statement sequence1>, m+ n. ?0 T$ F p7 K
until <condition> loop/ a, F- X$ d7 d k7 P. x4 D/ L, C6 N
<statement sequence2>;$ q- S& S# t! \* H) h c
end;
) U _' I) ~# A2 `" }; E (2) while <condition> loop- ]' s# v5 f) G+ O- x+ Q* ]+ M
<statement sequence1>; W1 k2 W( }) r4 n3 }0 U: h1 j! u
end;( \' b: t2 Z i8 L L3 h4 A4 X
(3) repeat
I4 U1 E2 f: m8 b. b <statement sequence1>;
& O+ U; y+ ~; u2 C! p until <condition>;
# k3 |/ n z# A" {+ |3 i9 W (4) for <condition> to <condition> loop" C3 Q& U5 E1 Y% ~; r. W, Q% _1 T2 G; ~
<statement sequence1>;
+ s. W1 q& V% Q [5 ^1 u next;
: z- I6 I$ q6 j W3中断语句5 n& @' C5 h/ c* |1 A
waituntil <condition> prio <integer expression>;5 a: r8 Y# t" A
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以上为常用的函数！5 G' ?* |0 b) O( _' W5 U
还有很多，如有需要我把资料发到你邮箱里
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