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发表于 2012-11-13 08:48:12
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1判断语句& F$ l/ _) O1 V& T" {$ V. S
if <condition> then% F4 F# J5 u9 _1 ~; N. v
<statement sequence1>;
. F9 c/ R- }1 c elseif <condition> then5 y& R/ `3 A. y* V9 n I- b1 N
<statement sequence2>;
! `3 T" z8 J' B6 @& ` else 2 V/ ?, t2 T& t* s2 b& U9 W7 c
<statement sequence3>;# d) d/ ]1 t J2 t+ D n7 Q( O4 a, }
end;" I9 I4 k" U( U$ J+ `
如果分支比较多，用：
; N( R* b1 @% N6 |3 R+ x inspect <expression>
. D5 K- E9 I1 P" W; N when <constant_list> then
7 G& r9 O1 y* _( @/ v- v' {' L <statement sequence1>;; P8 t: y4 `# r2 r J
when <constant_list> then8 a* a4 o3 f' _6 _
<statement sequence2>;* A. U+ l( V8 S7 h; w( ~% ] z
...
8 G6 ]$ S' `8 H9 O else
# J% |: o: f$ \+ @. t$ x <statement sequence3>;% u- J: C* Y! N2 z) \
end;# D- j! o# f7 B: ?7 S
# a) b6 _' Q+ D1 F% d& k2循环语句
9 b. o1 h l6 t! l" f (1) from <statement sequence1>
) P# Q) V+ W& R9 j' Y until <condition> loop+ ]" F3 W% l% b: Q* j
<statement sequence2>;
4 r" [+ U! \+ f7 K* f end;, T! r- `4 p+ L# k9 R0 u7 Q4 y
(2) while <condition> loop
5 k7 V3 W. n' Y8 Z! h <statement sequence1>;
" V- U" d" g- S0 k7 B end;+ e& m+ E' x' x Y4 i$ t$ k
(3) repeat
" e6 s. M: r8 M1 S, d1 N } <statement sequence1>;- A9 J& v( T# C
until <condition>;1 h: n6 h# D% O, n$ E* h
(4) for <condition> to <condition> loop3 y5 T( R# w$ S
<statement sequence1>;
) O, P( U% ~/ b" d# h6 e! X8 r next;
8 d$ b9 ~* U2 M3中断语句# B! y1 |. X$ ^
waituntil <condition> prio <integer expression>;
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5 q) v5 d6 l( K& _以上为常用的函数！
3 P( W1 A! n+ [2 ~) {' Z4 b还有很多，如有需要我把资料发到你邮箱里 ( b( T! ^/ U" |; \% W y
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