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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
5 B, c4 q, R1 p! j. x if <condition> then: H1 a8 A; }) Y# G; c" t6 ~
<statement sequence1>;: ~1 A& A! w" g0 h
elseif <condition> then) f6 r- E3 X% T4 J# {# V b0 p
<statement sequence2>;
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<statement sequence3>;
( b/ f$ T# K% b end;
. j6 v. V$ K& C( ]如果分支比较多,用:( y8 Y9 h3 g5 u. F
inspect <expression>
) q% M: L) N8 s. k when <constant_list> then* Q& [" o+ k$ ` y. M! N
<statement sequence1>;
( V! ]/ \" K7 e: m- x# @ when <constant_list> then
3 b0 z/ n. r0 ~7 q) n <statement sequence2>;
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else# P2 H0 R3 K4 O) _0 Y
<statement sequence3>;
5 J; Q7 o [6 Tend;0 {, |' V0 X1 u* h
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2循环语句( O# x6 Y; W# R
(1) from <statement sequence1>4 H y) W$ X' B& f1 Z z; F
until <condition> loop) c% g$ T$ M& U- {
<statement sequence2>;
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(2) while <condition> loop7 @- {* p/ p* M0 j
<statement sequence1>;
. R3 e9 Y/ [3 S) A* s! A7 Z$ g end;
/ U: F( K5 m m: w) w (3) repeat 5 g! _8 D, W" W
<statement sequence1>;& R5 u! `: |5 c. W
until <condition>;
; I) k6 j( s$ k3 S# s. | (4) for <condition> to <condition> loop, ]% \8 J. L( k* V: h9 ?. }- C9 [
<statement sequence1>;" p# V( s* p5 C8 A1 z/ l
next;' G; O. Q/ N; u6 b( V
3中断语句% Z4 g8 E& }* V9 H
waituntil <condition> prio <integer expression>;
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9 v5 h- Z9 K3 a# R: K8 ]6 d以上为常用的函数!
. |0 N" s& a$ m( Z( j还有很多,如有需要我把资料发到你邮箱里
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