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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. X, H% q4 n2 y- J! p( d
if <condition> then
/ j7 V+ a! Y5 V! |2 i, y) k" H <statement sequence1>;
1 Z) s8 m: `0 ?2 {' Y9 a0 m9 W elseif <condition> then0 d4 ~* B9 K& M9 _9 c- H1 @
<statement sequence2>;
4 j2 Z$ G* U; x# e else 4 }" z+ u6 ?0 o* f( _8 q$ D
<statement sequence3>;
* L/ \" Y @5 q. d4 W _+ [. m9 J end;8 R9 _0 Q$ x- P/ Y6 r
如果分支比较多,用:
5 d7 t( `) p$ R inspect <expression>
# f9 f# U8 r( \* j when <constant_list> then7 V0 P6 M7 g/ ~9 L) o/ `
<statement sequence1>;
8 k" G2 b5 B0 \ when <constant_list> then
6 o* Z4 A+ o# S# I" J1 k% | y% }/ K <statement sequence2>;5 [8 @% U6 L3 V- a+ O& n( I
...
. o5 p: d! g3 J2 u0 x- q9 b! D/ `& C else
7 s1 `! A; E( A; r! y, f$ f0 a <statement sequence3>;
) W9 g$ r9 Q) `2 Pend;
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2循环语句
' K5 v3 f9 [0 K r# D (1) from <statement sequence1>5 G9 F3 B, L& m% g8 T1 H5 h
until <condition> loop" b- |6 ^/ z8 Z+ h2 k
<statement sequence2>;
7 m M. R# E, w' r- H end;: ~) a4 ?! h' s! G- q- ?
(2) while <condition> loop6 C% c* f# e" e5 _. X$ r9 k7 C) r
<statement sequence1>;
% b8 h& @0 b& g' T end;
. [. [. W4 w3 f8 n+ C8 \! q+ ^& J) H (3) repeat
4 I' z! P( ?4 Z. M; j <statement sequence1>;
4 g5 m8 }/ K e: x1 Y9 J until <condition>;
, o; a' R. f$ i4 F K: K; N (4) for <condition> to <condition> loop/ i x2 y7 g( L8 H/ `, R4 q
<statement sequence1>;3 Q% L6 R% b# L3 L! p( @$ c
next;1 i( I/ }! [1 p9 H2 ~- e$ {- s
3中断语句$ S3 x, ^1 `% M# o6 z
waituntil <condition> prio <integer expression>;2 e- h" e+ P; N, F" {/ |+ h
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, n4 O* Y7 p6 M以上为常用的函数!; J0 e d( n8 r% W
还有很多,如有需要我把资料发到你邮箱里
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