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发表于 2012-11-13 08:48:12
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1判断语句- j! s w1 P! I( P5 z6 j
if <condition> then
" \1 Z# y) n( L# j1 _ A4 ] <statement sequence1>;
0 L/ e4 t% ?; U5 o8 | elseif <condition> then8 c. {( B, K5 `3 j1 f& E
<statement sequence2>;5 c b# Q: [- R' ?% f9 n
else " w* {7 z" s1 m# i: V$ `5 Z+ K
<statement sequence3>;- I0 E) B8 E2 V; O- Z' S8 [; |! D0 ]
end;' x: s5 g" ^" w2 M3 g6 t9 ~
如果分支比较多,用:
0 R& r; Y- @9 R inspect <expression>
' f8 f* C- z9 O) L& @1 q$ ~ H when <constant_list> then
5 N6 n. T7 D: ]: C <statement sequence1>;
( \7 O0 B; r J, Q# x when <constant_list> then
( e: `3 p" Z# ~! a <statement sequence2>;$ J6 \/ `/ I2 I
...
9 j0 |) x) z6 O$ a; F* z3 | else- w% B4 x2 H# \- y C$ s! q
<statement sequence3>;
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) A8 \# k# b( c8 K. i- f" A/ q2循环语句
( {3 L6 ~8 T5 d" i (1) from <statement sequence1>
, U8 t3 d: l# a- B7 a4 a until <condition> loop2 ?( @3 g E; G7 s* r
<statement sequence2>; \ \0 ^9 e" t6 g. }" m
end;( s! [& w' P& p
(2) while <condition> loop
3 Q" @5 N0 |& {& C. ^ <statement sequence1>;7 B! F$ i5 j: {$ a$ s
end;9 T, q. g' `& N4 ^. Y Y ~
(3) repeat
. Y: s" W8 ?# A1 j( r* l% H <statement sequence1>;' A1 |+ {( ~# a; n# R% b7 } C5 G: t
until <condition>;
' n2 s6 D- z) A7 L1 c8 @7 ] (4) for <condition> to <condition> loop |% {5 j% V8 }; y4 P7 G+ h
<statement sequence1>;# o0 R$ e H# c$ U. A) t
next;* x2 J1 A) v3 s) R- A( E) `) N& `4 E
3中断语句
2 O6 ^1 Z' N8 y( |1 y. E- d2 @" J waituntil <condition> prio <integer expression>;+ n+ o9 N: H' E( b! V V
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以上为常用的函数!
& l+ N& X6 j, u" `. j: I还有很多,如有需要我把资料发到你邮箱里 % u1 `9 u7 \' s, {# ~+ z, L' ~
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