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发表于 2012-11-13 08:48:12
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1判断语句' N0 E* A" R* p! b$ G0 i
if <condition> then
' M& f$ t7 D* h: f( Z <statement sequence1>;
& Q8 k; z2 z2 V' T7 \! J$ P6 ] elseif <condition> then* P ~; j$ N4 N% M' R l
<statement sequence2>;+ `7 E, |, C! K* n" K! T; P
else
7 j; A/ h9 g& c3 G6 L% ` <statement sequence3>;
# W, X# ]0 k0 L: M( ^" R( g+ l9 Z end;) ^6 n& N8 X7 _$ n, A9 X; Z
如果分支比较多，用：
' }8 f' Q6 P& i3 i inspect <expression>9 c5 ~: l! t0 g& Q2 {- V
when <constant_list> then' v1 p' x( f \$ O3 y# h
<statement sequence1>;, `% Z) K5 W$ c9 ]
when <constant_list> then
; ]# V2 u7 t) y/ I \- v Y. ~; ^4 | <statement sequence2>;" Z( @2 M, F$ q% W. M
...
0 g2 ]% B" X+ D# T* z, w( { else
4 g8 E6 T1 u0 K2 L9 Y <statement sequence3>;2 @8 B" k- ?4 ^8 P0 V, F6 z6 o/ X
end;- _4 n6 E1 o+ f
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2循环语句4 y$ F8 W$ ~4 J( O8 Z6 H
(1) from <statement sequence1>5 _: j; h! n# |/ l0 y0 t
until <condition> loop
) X& ^/ ^( w: N; v" d <statement sequence2>;* l! k$ y- q8 ?9 z0 \
end;
/ h+ p, ]; l/ T# f& U2 J (2) while <condition> loop
# x, F- D, s) P. j7 O) o) s3 i/ K <statement sequence1>;+ ^) V) l1 s" X
end;
' c0 c0 Z& T& Z (3) repeat
" H& f+ R$ a3 L9 `% q <statement sequence1>;
! z& q6 Z- R& }9 T6 ?( N until <condition>;
0 j. D" Q6 G) A: ]- z5 v/ O (4) for <condition> to <condition> loop
^$ f# Q3 e" u" p7 t h <statement sequence1>;, c$ v' n* A9 ?8 v u
next;
( F- B# g& k' P' J, q3中断语句
8 w/ {- m3 U/ z, F( _ C waituntil <condition> prio <integer expression>;2 O! I! P7 |% d& E! o& K* t" a
$ F9 c% D7 {" r+ B& y1 K6 ?
6 d. c4 W# H' w1 x以上为常用的函数！
- n: Z2 f% E! @9 E C还有很多，如有需要我把资料发到你邮箱里 4 Q: s) L) ~( m' u- \3 I
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