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发表于 2012-11-13 08:48:12
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1判断语句7 D" x" N$ m+ s
if <condition> then
: J1 X& W6 |" U& }' g' z <statement sequence1>;
; G9 f9 [# l/ A' F elseif <condition> then; p3 w2 n5 T! Z5 P
<statement sequence2>;
; Z6 \# V! n( ` else 4 |' u3 w9 ?0 N# ~( \6 b+ `/ S
<statement sequence3>;% N! M, P5 E4 z; C# R5 [( [
end;
6 T- R! G5 g- h! O7 W如果分支比较多,用:
- X1 z1 W) F7 p inspect <expression>
6 Z' y, O5 ]/ x+ r" z when <constant_list> then" s8 ^) m. P* _! a9 r
<statement sequence1>;
0 `) F: B- Q8 W; q ]% _6 h1 d when <constant_list> then
3 C l: O" G; s- W! d4 t <statement sequence2>;9 \! f- a# a9 Q4 [1 ^
...
9 e* h" y7 f+ w" Z( i else- E2 p$ X3 Z" a5 I
<statement sequence3>;2 G' d/ d# D- N
end;' H% a$ F4 j, @. F* f2 E* t
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2循环语句" X2 K# f6 ^% Y5 V& `
(1) from <statement sequence1>
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: K+ z' A8 Z$ t; j3 { }2 e3 T <statement sequence2>;. o/ M2 I) f% t+ e9 m( m* @8 U
end; Q- |& d' P: R* S0 [& x. c9 S
(2) while <condition> loop8 Q8 `8 {9 z+ ~6 {+ r. j/ Q
<statement sequence1>;
1 [- y4 q8 m1 W5 Q3 @6 G& Z end;
7 [; Q# w2 N* y: o! N (3) repeat ; T0 N- ^& d! s$ o# \
<statement sequence1>;
8 ]+ \/ h% k. q* I6 f- c: y* } until <condition>;% _0 b: H1 Y8 U: J3 s
(4) for <condition> to <condition> loop
" {5 C4 h8 a9 h5 u( M k8 ^ <statement sequence1>;
0 B( q, Z/ j$ G3 r: W P next;
6 R. ]$ d) O/ \, f2 O D: x* K3中断语句9 {9 } L9 i* u1 O4 {9 U- u
waituntil <condition> prio <integer expression>;: @+ W1 _2 ?3 w3 Q& s3 `6 \5 q
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. q& y& g. ^+ k& e& n0 X: C1 ^3 L以上为常用的函数!& i5 z2 f) F6 c1 T
还有很多,如有需要我把资料发到你邮箱里
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