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发表于 2012-11-13 08:48:12
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1判断语句, L |: k5 z+ n
if <condition> then
/ \+ W& d5 j0 c <statement sequence1>;
' N7 {! g& Z/ O( z elseif <condition> then* a( S5 M* w3 r: Q7 D$ \7 C
<statement sequence2>;
" c) S$ L5 C* t4 H7 Q. x$ P else $ D# [! F; N) b6 I
<statement sequence3>;
4 ]. Z3 c' ?8 I# Z; ] end;4 V, R. ~# ~( S% h$ A
如果分支比较多，用：
' k- c0 p# M7 c$ J inspect <expression>( o$ B5 p% O. p3 G& |- l) S
when <constant_list> then
+ o3 b3 q, i* z4 l" R, v3 x <statement sequence1>;
1 v9 I9 \! T! }+ @0 q# `, e when <constant_list> then) X( Q7 _7 F9 g6 c: R+ X' L4 i; m+ k) L
<statement sequence2>;
/ I7 {! y+ y- h+ k0 d$ z6 \& ] ...
6 a' x; p+ @2 ]* o else
1 G! A( m9 H) J6 ?& \9 ]5 Z <statement sequence3>;; k2 D1 S# L% U0 r1 O) c$ \2 @
end;9 I; r8 J. C' F W! V' l
- _4 w# h/ o& T1 a' `* p% L8 f I8 M2循环语句
4 s2 _; m% \9 ^9 Y' X% |4 N1 u (1) from <statement sequence1>0 x* t' _1 V0 K x& x d" D
until <condition> loop& V, i+ R8 `" e1 h6 A8 d0 M) K
<statement sequence2>;+ e% m, v- `+ i" g
end; e) k8 z: c. @) g5 c3 r" _0 S
(2) while <condition> loop
2 r: A9 I4 G5 `6 u2 e5 U) ~9 ~ <statement sequence1>;7 I% e) |; U u0 g- W6 w
end;7 Q; M- Y, Z" I1 P& |9 P! v
(3) repeat
`6 q0 D8 M7 A& \ <statement sequence1>;! k- R# r# A8 ^& X
until <condition>;
) x/ _ v3 y" c (4) for <condition> to <condition> loop5 `! |% m# V. z" N% z" u4 |
<statement sequence1>;
2 V6 O' V0 r+ X& P1 M4 C next;$ D! ^& F1 Q% p/ t! y4 h3 y$ F
3中断语句
. b3 \9 D3 P% O: f1 V; \ waituntil <condition> prio <integer expression>;; Z6 X7 \' f( d4 o
: A5 R* h# _! _+ B/ [
# M; Q5 n; L- G9 Q8 n! Z以上为常用的函数！
# {; M2 D8 E1 Q3 W还有很多，如有需要我把资料发到你邮箱里 : @: \: {* E1 v, y+ p: N
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