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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
+ R, k# ~! K+ Q: |: p+ ~% ^9 d if <condition> then
# y4 S8 _2 ^1 a1 U <statement sequence1>;6 x& C6 o, X- Z( n
elseif <condition> then
& f8 a6 r$ w3 { i0 @ <statement sequence2>;
, j' k* k! U+ K. K4 t* z2 | else
/ c: h( V* P) L7 d, [9 B. c6 ^! y <statement sequence3>;2 i( h5 x& A' x+ w( s! |/ r
end;
, q: e/ b4 M8 K2 N% d& c如果分支比较多,用:
$ J: K2 t" ?; Y, |; D, } V8 _% { inspect <expression>
" E6 @2 p5 E& M$ X4 e when <constant_list> then
0 q5 S9 N. y5 _ `' W5 I; k2 _ <statement sequence1>;4 o4 I4 a! W3 H. U
when <constant_list> then- s* |! O* u; T% j! v
<statement sequence2>;
9 [" Z' W! C6 F# e ...
$ z! I7 F% I7 ] else
( Q% [' l* Z& h8 ` <statement sequence3>;/ t& \4 C$ Z8 z- ?- l5 R
end;/ H. |3 p; g+ X# k( w
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2循环语句$ `2 j8 ^' r; j9 h" _% ]) @
(1) from <statement sequence1>
! S3 t% z# j8 H; o2 a7 g until <condition> loop
: z5 g+ U2 T" b8 c9 d [/ g1 D <statement sequence2>;8 T h. I4 ^- N6 c
end;
7 I% O$ _* e6 A3 N. @ K( O (2) while <condition> loop) K/ d0 U1 ?+ v% U, T
<statement sequence1>;
4 X o1 B- w, S% `2 h8 B end;0 b/ m- _- ]' i9 S
(3) repeat 6 ~* u9 ?+ ^4 {, ?0 `! X4 g
<statement sequence1>;
6 }8 ]! v+ Q3 ` T until <condition>;
, O7 J) A8 q" O2 C& n (4) for <condition> to <condition> loop$ p* f# X: e$ s: o9 C3 R8 p1 Z! L! b
<statement sequence1>;% E; j7 @, O$ c
next;: U9 V4 h( T# P; D! P* q
3中断语句
" v$ e8 ^( V! P% D# Z4 K waituntil <condition> prio <integer expression>;
; _+ T6 Z; L, D1 k+ g2 U8 {& f0 v- a4 m# _( E5 r! U
3 {2 F$ O4 e$ O# N. E+ s以上为常用的函数!: {! z) T) D6 w1 `
还有很多,如有需要我把资料发到你邮箱里 0 } P" m( k* u: n
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