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发表于 2012-11-13 08:48:12
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1判断语句8 T! S: e: h4 _. u% C, I( W
if <condition> then! g' p) |8 u6 W0 Z, W& ]
<statement sequence1>;
% f4 }( C+ h) x elseif <condition> then+ j/ A7 ~4 X3 y/ c
<statement sequence2>;. `! a$ l% w, W" J
else . E8 N8 e v$ z' w# i
<statement sequence3>;% s2 L& [, e+ [4 f9 S6 _0 x
end;
5 u; [" } d! l" y* k如果分支比较多，用：
* V7 _, y' u8 c% _, j inspect <expression>
2 z9 ^ W6 l; ? when <constant_list> then% p% a. r8 C; c& ?
<statement sequence1>;
, W' V$ t, ^' \( _* ?3 Z/ ^- J when <constant_list> then
8 @7 t/ D0 P% v! \9 f; Q" Y <statement sequence2>;
- Q. L' K; _0 N& M ...
* s- q+ `/ g7 c! j- t8 \ else
% h x! Q5 n! u <statement sequence3>;1 V0 u) y) l6 [( V Z n( \& K( x5 j
end;
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: o% M( W' S# \8 I2循环语句5 |- Y" |# |/ |- l
(1) from <statement sequence1>
# I0 t& Y+ M9 j8 M1 X! Z y2 V until <condition> loop5 l' M* ]% ]9 [7 U5 W2 f
<statement sequence2>;8 k' q! {' d- m
end;9 a3 F0 y) b3 d$ o
(2) while <condition> loop
( W' R( K% ^9 r7 x# }3 L7 W9 p1 _ <statement sequence1>;- m( f8 Q/ }8 [! r
end;6 z2 e" `3 i+ } ]& E; q
(3) repeat
; x5 w# Z n& F0 @$ g/ E <statement sequence1>;4 k7 d* j$ t+ ]. X' `( \
until <condition>;
: S2 {9 |! V7 a% n' j9 U (4) for <condition> to <condition> loop* r# e- F2 ^! ?" r" R( U8 D
<statement sequence1>;1 S) e8 G$ w+ U# k& k! k! U$ }
next;& k1 D$ i: \( E4 ?% O" p% S2 _- H* c
3中断语句3 V/ j: |1 { @2 ]& E
waituntil <condition> prio <integer expression>;
$ g( K+ M8 F9 v1 n, j6 l/ U1 y; y& f: r5 e1 d$ Y+ T
: P# g s- e" l5 K% {0 \以上为常用的函数！) w* f4 q9 e9 E
还有很多，如有需要我把资料发到你邮箱里 0 B* v+ k7 h" p: p; v( t
@1 s! e: G% j% P% e" \; X
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