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发表于 2012-11-13 08:48:12
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1判断语句, t% {6 d2 G& G( @: K% N0 M, s7 P5 J
if <condition> then3 J' _2 }6 W5 }. j* s2 ~+ O+ x
<statement sequence1>;
* K7 q$ h9 ?4 l1 A/ _8 R/ Y3 ^ elseif <condition> then! I' p3 r- L& h s& E' L$ ?8 |
<statement sequence2>;
& a6 D5 d2 n* |+ ] else
9 H$ c0 R4 Q) ?& I; j, \ <statement sequence3>;" `$ }2 p2 [- Z+ O8 D t0 y. i# {
end;
2 v) Z# Z" E B7 K9 e2 ^如果分支比较多，用：. A; d: A/ t0 m6 B7 r0 _& _
inspect <expression>
p9 _" N3 g8 o& a when <constant_list> then
$ |* U! i7 v+ }! s6 H- J <statement sequence1>;
/ p, A4 k% D2 H# m& _ when <constant_list> then
; i( D+ }" J7 ]2 ^* O6 ]: U) ] <statement sequence2>;
+ O7 D% ]2 G+ Z; ?8 g: l8 U! M ...' h9 ^6 A7 t1 U0 }4 t
else ]/ a, y2 \! f9 c* y
<statement sequence3>; L- l# B$ X6 a8 w
end;
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# d( C7 L$ q% `, M2循环语句
/ ^* B& {! _4 r3 s: q (1) from <statement sequence1>
! k1 ]# a" c& E6 ^ until <condition> loop
' n) J3 O, n2 q1 \) B <statement sequence2>;: y( ~3 j- \/ f+ I" P" r
end;: G; g5 J* T" U) i' T2 @4 X7 s
(2) while <condition> loop3 t* @6 ^# P3 I% Y
<statement sequence1>;
7 s2 c _9 D8 H end;' m* A9 |' w7 ^, t
(3) repeat : W; n. U0 o; e1 J: d
<statement sequence1>;+ y6 I, t, I. N- @8 }+ Q4 O2 V. v1 f ^
until <condition>;
+ A( H3 o M' n6 P1 Y% Y M# n (4) for <condition> to <condition> loop
8 N. r. O2 y n( n, V- u: J <statement sequence1>;3 M* ~1 a8 f1 }" r/ S& }
next;
7 k3 i F* T8 W3 x, P+ h3中断语句
7 ^: \5 U" A) F! X# g2 I waituntil <condition> prio <integer expression>;1 l: N! U5 v- p, F; T, G
: m) R h G7 t" @7 M* z- I
6 H% A) W0 V. {) \5 }以上为常用的函数！
" C* }; `% w' S3 q还有很多，如有需要我把资料发到你邮箱里 ! A' y' n b; |4 c o
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