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发表于 2012-11-13 08:48:12
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1判断语句3 ^/ N. f: y, n, G- a
if <condition> then% |6 B! u& h! {
<statement sequence1>;4 d6 m2 ~9 M9 }2 |5 [* l8 c5 u& j
elseif <condition> then
4 p# \" M) [7 r9 |: a Q. G <statement sequence2>;
7 F/ h! v) k0 b' S' {- X( W# D0 V else
+ H4 _& ~) B8 X: ^ `$ M# q) v <statement sequence3>;
" p! W/ i4 e, i: g/ M end;
% R8 Y) \# s3 M* f如果分支比较多，用：
1 R" H/ C5 M9 w5 M% w6 v: c( Y inspect <expression>% C) e) l- y/ V" C" W% e
when <constant_list> then1 a2 C' B- V: e2 r5 U2 K+ d4 n; [
<statement sequence1>;
7 M; r; ^4 ~& k, v( {# Q. D' @ when <constant_list> then! y, ]; o% a9 R0 Q
<statement sequence2>;) @2 u6 J6 d" Y: x& N1 \9 |
...
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<statement sequence3>;& i9 z& G/ O) t
end;" J4 v( c: Z6 ]& y7 Z6 q
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2循环语句1 `) y% B, a; f( V7 Y/ N K- c/ ]# l
(1) from <statement sequence1>
% _8 T4 n8 S; Y. L2 q# s7 [6 g9 P until <condition> loop; m. Q* y) p+ U! V7 g" ?
<statement sequence2>;
3 E# {) Q: q5 K" { S. I6 W6 q end;* u8 ?0 \1 _. A, {; t/ R( B3 B
(2) while <condition> loop
2 T8 [/ c- c) } <statement sequence1>;
& Z: M- ?6 |& H9 W end;
4 q" a$ k+ n n (3) repeat , Q1 Y ]( i! X! p) b3 S. m# R
<statement sequence1>;! j% N. @" W0 X4 z' h
until <condition>;
9 L% ]- J* _1 ~ (4) for <condition> to <condition> loop
. O1 o* B: r4 j4 l <statement sequence1>;
, ^% ?1 |6 _" o0 d# B9 F# g+ z next;
) t) S% n3 V- J0 b. c3中断语句
0 d p; W" U, H3 h+ S/ z waituntil <condition> prio <integer expression>;
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. m5 B/ U0 Q1 \( K以上为常用的函数！
) k2 b# N9 S- R1 V还有很多，如有需要我把资料发到你邮箱里 1 M1 S6 e- B, Z6 z* Y7 Q1 e k
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