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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* b2 M& |3 H6 `9 M1 i
if <condition> then
}# X6 t% n) I& i <statement sequence1>;
0 x- d! {$ M( ]5 q elseif <condition> then
4 ~+ x3 p' Y( h; ` <statement sequence2>;! y7 T- w' [9 Z* d; w
else
% i2 \- z' O! h7 _% C& N <statement sequence3>;7 |/ {2 Y* } r
end;! b! K5 l7 F0 F3 f% `, c
如果分支比较多,用:7 u. M* k4 M. J. y! C' P
inspect <expression>5 e% _: r+ g! j1 S* G1 s4 X9 V) e
when <constant_list> then% D9 z. @1 a$ e) n* U- V9 V' |
<statement sequence1>;
+ ^. c8 D7 |7 x& [# U h when <constant_list> then
& R9 `% \8 O& b. c& n <statement sequence2>;1 m# }! \2 F* d8 U
...
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<statement sequence3>;6 u/ Z% @: e y
end;& N, i# h! V& m" S: O$ C: D
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2循环语句
c" W3 O3 }1 N4 r (1) from <statement sequence1>
( i ]5 _5 ]$ S' h2 k until <condition> loop
$ s0 h6 o( O8 J4 `. C2 g9 z <statement sequence2>;/ [ _* P& g: C' I7 ^/ j
end;; Z0 s! E' ~8 m
(2) while <condition> loop
8 M+ z ?' o" M6 x ? <statement sequence1>;
$ B3 v* a4 \- f1 } end;# h! v4 L6 V* a L1 `
(3) repeat : f, {; K5 v" U
<statement sequence1>;& _2 L$ @3 ^" c, Y3 Y) k6 h& [' g) f( z
until <condition>;
9 j& q# b/ t% x `# a: N7 z9 R1 S/ } (4) for <condition> to <condition> loop
1 P) f5 P- ~- W <statement sequence1>;
" w/ K C9 t- s* b next;9 D2 ~! [$ w5 r6 o" i2 r- O
3中断语句" H/ A$ k( n ] H' C
waituntil <condition> prio <integer expression>;
" S; {5 Q8 @& q$ F% _, n/ T! Y/ F% m& S
; ?5 j, D7 D# y& z& o以上为常用的函数!5 Z) n7 V9 x1 H; a. i% ]3 D/ Z
还有很多,如有需要我把资料发到你邮箱里
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