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发表于 2012-11-13 08:48:12
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1判断语句
; B+ v3 r( o9 n2 e& p+ D: k if <condition> then0 d; ?( J4 }! @, u6 c8 h/ Z
<statement sequence1>;0 @; a' G7 P% T3 t, _1 |9 G" h
elseif <condition> then
' _* k' S9 W% F! m, [9 ]' k <statement sequence2>;
/ Z$ S; p* a4 P8 S/ { else ! A+ p* e4 `# K9 X) y! i0 `
<statement sequence3>;) N& P9 }9 t% G6 o. d/ d8 l
end;
6 A( [" X( S1 B2 P- [6 |如果分支比较多，用：; T7 I; Y' E2 f; J* I* c9 D
inspect <expression>9 k5 {, _' L2 W6 j' i% Z
when <constant_list> then& V5 c: h. b* v
<statement sequence1>;2 @ [& i3 ?7 j& H$ C1 d
when <constant_list> then+ N- M/ R/ X; j
<statement sequence2>;
/ m7 F7 K U3 P4 v* s ...
9 q# P; q# }7 D else
4 H" i" m7 v" B/ Q1 I! t8 H <statement sequence3>;# f$ y& ^2 F' r0 v0 s% _) h
end;
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# `) a) J8 k p* s3 v2循环语句
3 n0 V1 {. a! p' t! q# m (1) from <statement sequence1>; `9 _; p' L! B: q c+ [2 ]
until <condition> loop
+ p4 X6 n, @# j1 v3 p <statement sequence2>;
2 \. H( t& S( j' H% _0 u9 Q) h9 [ end;9 B5 i6 [% |0 d& o, a7 z8 U* c
(2) while <condition> loop W, P9 C5 r6 A( \- f; c
<statement sequence1>;
' K0 @/ n- H$ ? end;
+ Q; N' z' t& w& y' v* n+ J (3) repeat * P: o, u; ?* c6 D N9 W6 R
<statement sequence1>;
4 X% E- j) G5 d" z8 Q until <condition>;. I2 A9 _! H# I: J% o4 Q2 N
(4) for <condition> to <condition> loop
# h+ m! }1 L- U8 I( p7 I3 j" P <statement sequence1>;
' J, a" J9 K1 C5 y+ \' h5 M: w/ U next;
, [0 R6 i1 A, U+ q3中断语句; F2 H' S6 L" k P+ E [$ M7 Q: t
waituntil <condition> prio <integer expression>;6 N6 `+ H& L8 i7 n. y$ B
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以上为常用的函数！! ~& Z. q Z9 k( I8 c9 F
还有很多，如有需要我把资料发到你邮箱里 % K9 \4 y# R& w, m
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