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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
7 T9 k* u4 G7 y2 t6 v if <condition> then- T8 g/ l k2 `4 l6 {
<statement sequence1>;! m# u& }4 `/ m/ D4 u
elseif <condition> then
5 C, Q) Y% h9 p <statement sequence2>;) R1 ~9 w! k% E, i/ R3 h
else 3 K8 a& z7 d$ W
<statement sequence3>;
) d* V& r1 j* P* r* y end;
, o4 U, b4 D$ e! J; P如果分支比较多,用:% s2 F0 b& Z( c3 h. m. W
inspect <expression>
& e/ J: _1 q" i ]$ g" \# a! _ when <constant_list> then+ F5 h% N" |+ a3 b
<statement sequence1>;- j0 \7 r; R- N
when <constant_list> then
# f. n" k. d! d3 _% j <statement sequence2>;
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else
7 ]/ a* C+ W+ R, W <statement sequence3>;
/ ]4 x- {" N7 F" X& A( A) R; Yend;
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+ e5 d7 X7 ^& j) N F! a, I4 Z2循环语句
; Y: q7 S# [+ K% ?& l4 _ I ? (1) from <statement sequence1>6 w2 z& a4 R- ^
until <condition> loop0 z/ p+ M: h2 e M [' W9 ^
<statement sequence2>;7 {. E4 R+ m7 B2 W
end;
. D1 s$ w9 a6 i+ X- X" C2 n (2) while <condition> loop
, u# A- G! N0 t. z <statement sequence1>;
, O: V: ~1 `+ f9 [ end; O6 U0 r5 [) z0 W4 p4 N
(3) repeat
- [; u, h+ u+ f: n* P" a) V4 P <statement sequence1>;
0 x9 e( j$ }9 t until <condition>;" y9 S, P2 q2 h+ R2 r) b
(4) for <condition> to <condition> loop
% F1 |' f+ R. ] v9 t" o! L# W* X# P <statement sequence1>;
& t! z4 Z4 }8 w# k8 K* o& g next;9 A0 k+ D/ U9 @& B* [& u0 d! [4 A( C
3中断语句
: @) U; ^9 z+ S waituntil <condition> prio <integer expression>;' e$ B# ?( w4 Z
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以上为常用的函数!
/ E+ W, w3 u8 @: ~还有很多,如有需要我把资料发到你邮箱里
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