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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& l! P: W- B) U$ M
if <condition> then
; W6 ?. ~: I; K% g6 J2 _2 B/ { <statement sequence1>;
8 z6 H8 w& \8 y+ R5 k, m; z3 _ elseif <condition> then% O1 O/ M) ?- i) t
<statement sequence2>;
/ {9 R2 D+ M" Z2 Z, D else ; i) R, O) o, R) W2 _5 B( b
<statement sequence3>;* z8 Y% t" P* r9 z! g! o
end;) f; {; W6 r- p- i: A
如果分支比较多，用：0 {0 E1 E- K! | ^' G, b
inspect <expression>
V5 O. U7 K. l0 j2 w when <constant_list> then
9 \' l2 ]% N, n) B% w <statement sequence1>;6 d# p0 W; P+ o- m; ^( i
when <constant_list> then% J& @$ J; e+ f! n( {/ V- a& C
<statement sequence2>;
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else
; L; _) @0 P$ N0 l, Q, e W <statement sequence3>;( y; F# A2 p% n7 D) Z F
end;
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2循环语句# F8 u3 i+ m9 X3 o" A' u+ \. O8 V; j" j
(1) from <statement sequence1>2 \% j" j0 [8 z; ~( D: s
until <condition> loop
, S+ ^9 u" b& s <statement sequence2>;
3 D% C9 o' _# t% Q! C end;
k; h- t- N) e7 n A- z! h (2) while <condition> loop2 T3 o" d; r/ K* r) K' m
<statement sequence1>;4 h* l4 C0 p8 S
end;( u4 Z; [# {6 Q- z3 G2 m
(3) repeat 3 n8 R& m8 B3 h% ]1 v" F( M( ^
<statement sequence1>;
1 _3 x4 b" J5 w) c3 c until <condition>;' A5 s3 K+ x2 ~- S2 H
(4) for <condition> to <condition> loop8 h2 S3 N, ^) z+ K/ T7 B- V
<statement sequence1>;
( G. b3 q4 {0 B3 C% \6 G next;
6 P4 p6 R8 Z% x/ E# t3中断语句
9 I, z2 N9 a/ |) K waituntil <condition> prio <integer expression>;1 A" q- y5 \7 N! T& k) B
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以上为常用的函数！& G4 R* `/ a0 m' F& x
还有很多，如有需要我把资料发到你邮箱里 % \2 {/ k$ k: ?/ a8 h$ p5 I
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