|
|
发表于 2012-11-13 08:48:12
|
显示全部楼层
1判断语句
$ z! z9 X$ x7 x% z( M if <condition> then
5 F+ x9 M8 i p* l$ G7 ? <statement sequence1>;
5 A) ?+ S+ A6 l elseif <condition> then! s3 q2 j. |7 n6 v# K
<statement sequence2>;% t% l1 j/ C b, c1 T
else
! X; B2 Z6 P( }; ~) Z <statement sequence3>;
# v. F$ V" L) H, X7 k& b8 e! K5 l# ] end;$ j/ [/ \0 W( a5 ^' H
如果分支比较多，用：0 N* I3 A) a% g( L* p$ L: f
inspect <expression>
! P- R3 b3 ]( f) [* g7 U5 c. [& Q when <constant_list> then$ b$ i. R! k \
<statement sequence1>;6 j5 X7 ]9 ?, e$ w/ F
when <constant_list> then
6 J9 a5 w# |7 O$ _$ @- x <statement sequence2>;0 R# ` G ^6 H% Y6 d
...
( u4 ^1 ?- \) t, q. q3 X, y7 U* K else
# e1 I$ c. g% ]$ S5 H$ q- c <statement sequence3>;
0 A, x6 I) a6 a" y' N/ \end;! U8 ~& A: U' g7 r9 u$ w( v0 g a
% k4 B* ^6 L+ ^ N0 I( F; o- x* t2循环语句
: F7 \; ^' n3 Y3 N% \4 ?8 X/ e- c (1) from <statement sequence1>3 o `2 [5 @0 w7 C7 c( `4 K: }
until <condition> loop& q! S$ N9 n' M1 A: J
<statement sequence2>;; T% p1 k6 [& e" x6 |
end;& {9 D/ R7 _! P* P2 g
(2) while <condition> loop
9 ^8 Z5 O1 t4 @ <statement sequence1>;
9 @! P8 Y+ {% Y& D4 G7 | end;
+ C3 c: p: _9 J6 o0 y9 W( F (3) repeat
' l+ B$ i9 l) O8 u5 l <statement sequence1>;
3 n$ N( m4 w3 [, d" G% j' O9 b$ Y( G until <condition>;# S7 E# d& X" P+ X9 u
(4) for <condition> to <condition> loop
4 z! |! W1 [" k& ^3 y6 Y <statement sequence1>;" k" A/ E, J* J4 o, H' i( T x+ C2 E
next;0 T, |+ ?1 m) j
3中断语句
g3 w6 S4 ?/ P% D% l! y waituntil <condition> prio <integer expression>;; B, O) W3 c. u$ z. a
/ u( K9 _2 B* V! X1 P) r
0 S3 u! \8 s: Y! Y3 X6 e' c7 U
以上为常用的函数！
0 v7 ^3 n& a" a还有很多，如有需要我把资料发到你邮箱里
7 |2 O9 C1 i$ d; |" |( U U( \" @" _3 J8 V7 g" i5 m- e7 M ^
! e4 A& o- b. O, j
6 L+ {% }( l: G! h2 c
- \; |$ p9 Y+ @
7 X S1 D# L2 ^' D" r) O5 u9 z2 D( ~8 e g
6 Q4 |* \! S% |
- z/ G9 d; e+ W, F9 r; l
3 d0 J% n$ `. W u5 v
& W# D% \" l8 A! c2 u; g9 L |
|
[复制链接]
