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发表于 2012-11-13 08:48:12
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1判断语句! _/ r- h; Z' G& r7 p
if <condition> then1 V8 o. G0 R- ~) _% g5 s$ A. N
<statement sequence1>;
& ^; t$ o& [( O! K* r" s* ] elseif <condition> then
! E* ]. g! P5 P% Y <statement sequence2>;1 T9 c$ }+ W. L% z/ \$ P& }( N4 v9 x
else
0 o# |2 K9 g9 ^1 n% Y: D <statement sequence3>;
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如果分支比较多，用：8 V$ v/ ?8 |* ^- E- r
inspect <expression># `4 R' H5 J+ {* M& y L% Z9 K
when <constant_list> then
$ G/ N: c( f! h6 I1 z) e <statement sequence1>;
1 F6 r; `9 }0 p3 G when <constant_list> then
) d! f5 G* ]* X/ b <statement sequence2>;
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else
) V7 H' r' ?# `7 {4 ~ H <statement sequence3>;, S$ n7 i9 u# x4 c
end;- Y: y8 V' E7 @& t9 l7 T
M2 L( H, @, M7 L% X9 P' _2循环语句
7 {2 t' q4 ]2 d4 O (1) from <statement sequence1>( T# o) T. H$ T; @7 g
until <condition> loop" F" T1 B. T, ^5 W; B+ V
<statement sequence2>;
8 o8 }& W" P! s5 D0 A. w3 @1 ? end;& A* s7 {0 q4 K. o( Q2 F* h) U
(2) while <condition> loop0 A/ z8 M& z, w& u- L3 o; `
<statement sequence1>;' ^" d$ T5 S! W7 }4 q3 N4 s
end;+ j2 L/ M5 K" Q* S! Q, A; o- y q
(3) repeat
1 j; H5 x8 c' C+ Y6 g$ b <statement sequence1>;
, L) b4 k+ a+ e8 [5 B until <condition>;- H4 j4 p, I: y. |
(4) for <condition> to <condition> loop7 Q6 {/ J. g N- {
<statement sequence1>;
1 c" C9 M: R+ J8 K# L6 Y8 R next;! C* B- S$ `8 k
3中断语句
7 s* a: U( ]% U5 t waituntil <condition> prio <integer expression>;4 r- l6 C, b- f3 U+ d
7 C6 f: {; N7 ~% w: ?6 o" I1 f5 y% D' w
以上为常用的函数！
; l9 r) V. H! M' k& F还有很多，如有需要我把资料发到你邮箱里 % @5 N" @" `' C# Q9 T) Q
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