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发表于 2012-11-13 08:48:12
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1判断语句; l8 i$ K% C) R R' _/ x
if <condition> then
# b' y4 B8 q9 n% \9 b, t' Y! H <statement sequence1>;: o/ j) }% t, i8 a L
elseif <condition> then
8 T% Q# I$ k2 O4 S) j( E <statement sequence2>;
' d! I; a1 R+ J& i else ) c+ M( l5 s* B. D0 _) t8 O8 R4 w* w+ |
<statement sequence3>; O3 Z0 [# s. `
end;- T, K8 G2 Z) ~" Z6 V5 k9 q# p
如果分支比较多，用：
2 y6 ^# i: G1 J/ Q inspect <expression>
# p8 }' G' \7 | when <constant_list> then
: a3 @3 n( v/ \3 J; Q% b- T& [ <statement sequence1>;% Y& G( h& D: M B6 V) |, z9 p
when <constant_list> then
o5 m& j) P6 @, ]! |% w <statement sequence2>;
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else6 M& G6 d& `" m S. K8 V8 P
<statement sequence3>;9 x/ j# K/ m" P# o8 G" [$ C. g5 r
end;# s2 l* w5 T0 k
% f+ ~- Y5 b# g" T8 H0 |5 I2循环语句) o7 k4 Z9 Z0 j! q
(1) from <statement sequence1>
" r9 ?6 W! _( o! _$ x4 A% s3 D until <condition> loop% x$ V5 }) i4 ?! M6 f
<statement sequence2>;0 m; F @ b7 a. d3 C# U! p
end;
@1 T" O: C, P9 M$ B (2) while <condition> loop
8 R3 ^% t1 m+ ? <statement sequence1>;! W+ N2 i' O9 b( Q& s3 H
end;
+ d3 n) y. C! o2 R! I9 F9 S& g4 f (3) repeat . t! }5 i& U9 \
<statement sequence1>;% _ H2 d5 l9 ?9 S. {* D' c5 e) ^
until <condition>;+ D6 E! @# r5 p3 p1 B
(4) for <condition> to <condition> loop6 ]4 `1 ]4 D R* c2 H( S/ [( G/ ~
<statement sequence1>;3 C4 e" N) M5 F, k7 T/ X
next;
. e8 Z5 N. K2 y+ b0 g; h/ Z# j% u3中断语句
1 [3 O1 c7 b- @8 D( y waituntil <condition> prio <integer expression>;
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7 i1 T: U- g; Z& B; Q1 z7 n/ t9 `以上为常用的函数！
) N: Z y D9 f1 ^% Q" u( d* B) s还有很多，如有需要我把资料发到你邮箱里 + c5 m, N, k4 D' F. V
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