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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; F/ v" B& G8 I9 r8 w7 d
if <condition> then$ u s' N$ b- A3 T7 _4 }
<statement sequence1>;9 [. B1 g, i: s& z- V
elseif <condition> then
* ]/ ?) @8 i9 o5 K5 Z <statement sequence2>;
! x. p; o+ t9 v6 ^0 B' ^; n else
4 D6 M" R2 S7 H <statement sequence3>;
4 g" ]% W9 X$ ^0 |7 l8 y, r end;
5 V1 c; o$ I2 z' r如果分支比较多,用:
, y4 [; X& ]" i( I2 L9 q# ^) L inspect <expression>% W& H! q( w7 O
when <constant_list> then
& _. ~$ W; n ?9 q <statement sequence1>;
, ^ L4 q. {. H when <constant_list> then2 D4 ?8 N& J5 H7 u) M+ J6 Z
<statement sequence2>;
% B( s- k, }1 r( x. P* g+ p ...
1 i% \' M, f9 r6 ~2 n else+ Q( q4 H, A/ K5 p
<statement sequence3>; V: M1 d& B# v, ]* ?! B0 @4 c
end;
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% W0 ^# ?* G' F( z9 i% b2循环语句0 Y) m% V2 n2 Q& j
(1) from <statement sequence1>( K+ Z( N% ?1 w& v( \
until <condition> loop
: k$ _7 k' B; \$ Q4 h- I0 t <statement sequence2>;% |, r7 g0 e3 i! c' o1 M/ A% h
end;( s% p, m, O2 p5 N6 M" m/ g
(2) while <condition> loop& g- q( G5 I% }+ \ s
<statement sequence1>;
" K. B2 s7 t6 G; R end;2 N* U# G$ n& K! z
(3) repeat . ^% O1 Y/ W0 b5 H
<statement sequence1>;
1 E9 J/ O9 E3 U; T until <condition>;
/ ]. ^" y) R W( U (4) for <condition> to <condition> loop
. I( }7 H/ y8 m3 o <statement sequence1>;
' J$ l6 w- l. d next;$ X3 Q, x) J1 u1 X4 r
3中断语句
6 S8 } V% O0 e- E9 U waituntil <condition> prio <integer expression>;
! t' A5 C( P$ }9 [# S. ?7 p7 o4 G( @6 Z! i9 f2 I) \
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以上为常用的函数!2 {/ G7 `0 j: b0 f4 Z3 G) e0 L* y
还有很多,如有需要我把资料发到你邮箱里
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