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发表于 2012-11-13 08:48:12
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1判断语句
! X9 X! f; r# S if <condition> then
; \& X: B6 g" ] <statement sequence1>;, l: p" O1 g: y# e7 K) c+ }
elseif <condition> then" z1 F, c; _/ Q
<statement sequence2>;
7 x/ m9 ~0 q) E5 B/ _, v5 d n else 5 k. t# I! E1 ?! Q ^8 f) ?( J
<statement sequence3>;
7 e9 U0 U Z" v: \; C$ R end;
% S" x0 v# q7 e( p6 A如果分支比较多，用：
# Z) u1 g+ s* v inspect <expression>
" n6 U6 K: q4 L3 `' I when <constant_list> then$ P' v9 ?/ R! v/ o5 E9 ~) s
<statement sequence1>;
" K( W3 h6 G% D$ n1 {0 n d when <constant_list> then: P5 B2 b" g' R+ @% X8 @/ |/ L
<statement sequence2>;
2 z' |6 N, `) L& z ...
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<statement sequence3>;& q; k% Z/ @2 L4 S d/ L& P' K
end;
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2循环语句
* i+ f n% J+ E! o% l% F% ?, l (1) from <statement sequence1>8 H$ a7 W1 |. F5 w% H
until <condition> loop
0 m2 F4 r/ V6 ^9 Y <statement sequence2>;
: I: N) H. B; z: C/ L end;
8 ^+ F" O3 `& t K4 ~% L% J (2) while <condition> loop
: d" k n6 @- g/ U# y( a <statement sequence1>;
2 v8 ~+ L# Y3 d1 y4 q( \ end;3 J j3 d6 p0 U b% A9 Z
(3) repeat
2 v/ ^& g: x3 Q; G' H <statement sequence1>;6 _* G# t2 s1 q2 `2 G0 Q
until <condition>;
2 X9 K8 y7 h7 c& k5 n2 F (4) for <condition> to <condition> loop n+ E) L) f5 ~
<statement sequence1>;/ j/ V# o* h2 I L2 G+ \
next;
" |8 V( V2 i3 i3 N9 L1 e+ y3中断语句
! T! n% r6 |& [ waituntil <condition> prio <integer expression>;
j+ c% Z) Z: R" P$ l- Q! ?
* C1 ` U2 X# I6 x, q( O4 @5 p5 {8 \3 `% i( g
以上为常用的函数！
# F- n4 q% s, b [+ r7 q还有很多，如有需要我把资料发到你邮箱里 ; Z Y" N3 ^3 m5 W
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