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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
) g7 S7 [( M1 v if <condition> then
3 r& {4 d/ H% C <statement sequence1>;
$ \* c2 G3 s, [ elseif <condition> then
6 K w l; W. f A5 V <statement sequence2>;* v5 n9 ~* e( n
else
+ |9 F8 J$ E, w, ` E1 ^ <statement sequence3>;; J# }& X# |) [ _5 { Q0 P
end;
, p* F' P" N) I5 i" S" |如果分支比较多,用:5 f( M; U6 k1 g1 K- v8 [
inspect <expression>) K2 i% i3 Y/ R5 y/ C1 V1 y. ~5 v
when <constant_list> then
) H+ D b2 W3 ` <statement sequence1>;
! i. X f* D5 }' r5 h when <constant_list> then
i+ W6 }2 q3 Z6 M5 F <statement sequence2>;
' P: ~6 Z) _) x1 {& [ ...
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<statement sequence3>;$ T2 n, q: b% E% r
end;
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& { U& u1 L$ V/ m" w% M7 v3 @2循环语句 E8 Z- A; m* c/ @& G5 ?
(1) from <statement sequence1>! D+ X, j3 Q: g. z
until <condition> loop
; G5 \; I) \! S+ D' n/ c <statement sequence2>;4 s5 l; Z# ]* H; d4 s
end;* [/ C5 n* P8 e5 R+ V
(2) while <condition> loop/ M, r" y R( a- u! a* ~
<statement sequence1>;
V" a/ Y6 _0 i* i end;$ W2 k$ [3 p6 W
(3) repeat
6 ~4 q" Y2 `; W5 ?6 V+ _: N. n <statement sequence1>;4 b. L8 O- c ~9 u w
until <condition>;
) C) V( D; _, e" U; e (4) for <condition> to <condition> loop' D' m6 v* C) P9 v V/ [ L* F: B
<statement sequence1>;
! d5 u9 f- l0 }; }1 K1 d, Q' G9 O next;0 z0 i1 ~" w1 M6 N q: a/ {& V! ~
3中断语句9 p: Z; i! i! w- n. r
waituntil <condition> prio <integer expression>;/ c' X( L/ } z# P' k. X
! ~, u3 H5 w; n& h+ Z
8 m( G T# z E2 H$ C5 a& E0 I以上为常用的函数!
' W/ F: F) q. W' M" K8 S, U还有很多,如有需要我把资料发到你邮箱里
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