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发表于 2012-11-13 08:48:12
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1判断语句
5 @4 J- L7 T/ c2 a2 i if <condition> then2 p: U3 |$ i( q& `3 _ T8 d; g, w
<statement sequence1>;* b/ D& y) a3 T' U
elseif <condition> then; M9 x4 |$ A# y+ H
<statement sequence2>;
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<statement sequence3>;
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如果分支比较多，用：
# S& S: i/ S, j& Z: J& ~ inspect <expression>7 Z- j4 i0 [" N, w" {
when <constant_list> then
3 |* z! b/ ?7 C3 |" j <statement sequence1>;5 e f! Z+ ^5 ?; f! [: h. c5 z
when <constant_list> then# T( Q. j) t7 k/ A5 C5 v
<statement sequence2>;. P' P4 M/ z( ~! [( _2 u
.... _5 B0 M5 h* B; X4 O# ~! ]
else
7 p1 J4 U0 {4 I" {& c( T <statement sequence3>;* Q: L9 a: o$ i' h) c
end;' [* M/ s2 T( f' T2 [
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2循环语句( Q3 l* i, Z" |: |; P: l
(1) from <statement sequence1>
( [8 k' v* y6 d: p8 @, f- n: N until <condition> loop+ r: X, b% P3 N; R: `8 n5 B
<statement sequence2>;
, }# {1 ^. T" N) e3 e0 j end;$ c0 I9 e8 d! |4 ]! P0 ?, r, J7 K
(2) while <condition> loop
( G* K7 M, J- u. m: ^) }; e1 j <statement sequence1>;
* B6 v7 H3 \3 K9 @8 ~0 s" o8 o& W end;- f* C$ t- v9 V7 J5 R
(3) repeat 5 z# l% w' M5 @
<statement sequence1>;. d) c: D7 [/ j# }- O
until <condition>;
, A f& ~% P" a. N (4) for <condition> to <condition> loop Z/ a- B! y. j$ Q0 q8 R3 l# {
<statement sequence1>;. P$ O8 f& J7 I* Z2 o; _
next;4 Q" }; m3 p6 H9 l% _0 B
3中断语句( C& p2 ?$ \- d( s V# u
waituntil <condition> prio <integer expression>;
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以上为常用的函数！. J; {1 p3 o" i# a J( h/ o" _
还有很多，如有需要我把资料发到你邮箱里
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