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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0 F* B2 W" f4 J; _/ Q& e
if <condition> then, t6 T0 @' @% Q6 G6 d7 {
<statement sequence1>;* r! b, V" m4 t6 g
elseif <condition> then$ I2 S9 L4 V9 v6 J3 h5 d$ K
<statement sequence2>;2 U$ n2 y) O; ] f
else " d; C$ `4 d8 j5 h Y, E
<statement sequence3>;
' H; R3 a; r7 u" J end;1 _, i. Z u9 Z/ U
如果分支比较多,用:/ b3 c" b) \2 L0 B% l, V2 A
inspect <expression>+ D; n9 O7 w9 R3 q1 k
when <constant_list> then4 H4 N9 L! f' v/ r% x U8 @
<statement sequence1>;- i# T7 @5 B2 {
when <constant_list> then
( j; ^7 }6 @* P5 |. [ <statement sequence2>;( p7 V& v, _( R: \$ I9 p
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else
; I# w6 Z% P: } Q/ J <statement sequence3>;9 t; T1 H9 T2 n( |
end;
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2循环语句
1 k" V7 q5 C+ ]; n* I7 Z/ A/ T (1) from <statement sequence1>
1 |' G' i9 [6 W |0 i3 I2 y7 V until <condition> loop3 `- l: g* b8 a* B7 u/ D8 H
<statement sequence2>;
: x8 L" D# m; U8 R end;
# U' u8 ^8 o4 Y) W (2) while <condition> loop
3 N' x M& W6 p+ r/ L" { <statement sequence1>;. z: q( g7 r3 ], b, S$ w
end;
6 E2 w+ {! T' q7 A3 A' {) Z1 P (3) repeat : f4 o, D; c/ _* [; j+ p' A% J
<statement sequence1>;2 h+ C4 L$ V6 e3 g! v4 L
until <condition>;
; L0 f2 j4 e$ C7 Z& k (4) for <condition> to <condition> loop" h0 |" ^/ H2 t1 ], ^! U7 H7 {- R
<statement sequence1>;
8 T5 b: O& l( R next;
$ n( y' K3 d1 i3中断语句
1 t% M$ P( H1 Q waituntil <condition> prio <integer expression>;* A, s5 L2 D* t( i
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以上为常用的函数!
! g8 n& g2 B; z- {! i还有很多,如有需要我把资料发到你邮箱里
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