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发表于 2012-11-13 08:48:12
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1判断语句
5 b$ L* ~# n5 M& K* e! S if <condition> then3 u+ K. o" X& f& h& B9 @5 n
<statement sequence1>;) X9 P, @2 X: F
elseif <condition> then+ \- f) k" |- h) @( N
<statement sequence2>;4 ? ~9 ?- D. A" p' T
else
2 Y* r! e4 {0 l2 e' G% b5 ]6 d3 S <statement sequence3>;
! K: n, T, d5 S9 B end;
8 R* d" s" L! \0 s如果分支比较多，用：
! n p, {9 I+ [* W inspect <expression>
6 U0 S2 j7 N5 y, x when <constant_list> then) J1 h$ V# T5 l; u0 ^
<statement sequence1>;
+ D& L! d6 n+ ~ when <constant_list> then# g/ D0 r& w) E
<statement sequence2>;* h* q. e1 ~4 P% K7 D
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else
! |5 a+ M( o8 J& \% G <statement sequence3>;
# L% t6 G5 o6 q, n: Qend;
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) F0 Q$ U( S5 S& x O2循环语句( z5 `" A: P9 M5 J4 Y; R
(1) from <statement sequence1>0 @; ]* t( R8 F7 Z, e
until <condition> loop! C2 c) _4 w8 x6 ]" ~% `1 Z& q* {. e# e
<statement sequence2>;8 N) r R" k7 i0 U, s( z: d8 E8 v
end;' J; Z+ F! D+ @% f# Q$ H+ Y2 W
(2) while <condition> loop
0 I E- m5 _% u4 U: Z8 y <statement sequence1>;5 O0 D' }- w/ i
end;
: k# a4 }, c! ^$ X (3) repeat # r/ n( S" d% I/ t7 z( ]
<statement sequence1>;! R6 h5 f* a, x
until <condition>;
' L' G: F) X& C/ u7 Y (4) for <condition> to <condition> loop
+ I2 v% ]9 Z( e <statement sequence1>;
! n4 B* T' G" t- O1 V. H next;
: v; E- A @$ a/ e( w2 A9 x3中断语句
. Q; l$ r( D) i g% m$ z2 k waituntil <condition> prio <integer expression>;$ _+ I2 N" B+ R5 g0 }4 _
* ~3 a V" p, r( C
3 {7 ~) Z' r; B. b; ?3 H. \* {以上为常用的函数！" @$ d- O+ G5 L) o
还有很多，如有需要我把资料发到你邮箱里 2 S* C! `0 h# u/ V d% V( s) @$ L
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