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发表于 2012-11-13 08:48:12
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1判断语句4 A7 s6 Z& Q0 Q7 c; E6 j
if <condition> then% U. @1 D2 s/ G; K
<statement sequence1>;
" v0 Z* \) C* ^. b elseif <condition> then+ E3 C1 c' ^2 L0 M7 [+ {. {
<statement sequence2>;1 Q4 Z W o- K4 q; J) T0 b
else : V, Y, n0 l0 e* t! o! ?6 T5 B
<statement sequence3>;! [4 f U! d& X, X
end;
. C7 }& P1 c* ?" Z) o如果分支比较多，用：
/ h8 I3 g6 J+ e. Z E3 j inspect <expression>
% J" S; M! _& ^" ^- y+ Z" X8 [ when <constant_list> then; J p7 a% O1 ~$ w% _' o5 l
<statement sequence1>;% c% \) [* X3 m
when <constant_list> then
! L* Y6 w2 y. U G! h <statement sequence2>;- |9 _1 O9 ~4 z2 C2 O: n8 v
...3 E0 p1 N" Y* U* s! u
else* a+ B E% f0 C; O4 Y+ X3 @; F
<statement sequence3>;
t S: m' q6 l, aend;/ G3 {/ J7 L( ^
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2循环语句
) l0 U1 D9 D9 c3 K4 b (1) from <statement sequence1>$ P5 |' O O h9 j: _
until <condition> loop7 P6 L( T0 A1 H9 D8 Y
<statement sequence2>;* @' p+ x4 b7 q' ~/ b$ V
end;
& [7 L; r8 j% e$ a (2) while <condition> loop
# _3 F6 [6 g; R7 T# F) s' o <statement sequence1>;6 u( @% { _7 u
end;4 c& p- [- ]9 j) J# T: P; t* W
(3) repeat
# M* V! P+ d$ t2 O/ n. O <statement sequence1>;
- w$ L6 Q3 D( `8 `3 Y) d+ h until <condition>;- J7 \. \1 F$ J8 v1 h
(4) for <condition> to <condition> loop
: w- h% v! V6 E" n <statement sequence1>;/ f( v6 W$ R) x; ?. M
next;
! {8 A1 T6 H/ S1 K/ e; M3中断语句
/ }, s, G C6 o$ o+ e waituntil <condition> prio <integer expression>;* M9 f! _/ l+ L+ [& r
$ t' ^% g9 P. W& B0 j
7 U0 @( _/ e2 ]8 u( Q& G5 |3 l以上为常用的函数！
- l% |6 S4 r: C+ \还有很多，如有需要我把资料发到你邮箱里 $ `8 Q4 Q. E% g
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