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发表于 2012-11-13 08:48:12
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1判断语句
2 W# D! F1 n. J6 l9 H if <condition> then0 R' ^) T6 L0 x. ?5 x% l8 |+ c
<statement sequence1>;0 m1 J) C- W0 |+ o E
elseif <condition> then
3 Y' j& c% a" f- Z7 i% n <statement sequence2>;
& J9 |$ V+ F' l% J else
* S- B' w7 x# B% ?, M <statement sequence3>; }/ b) h+ r5 E4 }' U
end;
6 J) } c7 ~* V0 G. Z如果分支比较多，用：
' g, x6 w) c; _) | inspect <expression>% l2 R/ I* J+ H+ R( O& \ Z7 m
when <constant_list> then$ j4 ~" _" _% `/ }
<statement sequence1>;
7 x; O7 p% T9 P' I2 ?1 s when <constant_list> then4 @" w: y* s3 N- l
<statement sequence2>;# x- Z. ]/ Z, m- s) T2 `4 A5 c1 `3 p# G
...
# ^7 L; \% Q7 Y% [5 t) w ^5 V! O else; Y" M$ N8 I" m) Y8 q
<statement sequence3>;9 x3 A0 b, J3 [1 A& [
end;7 j# ^$ F" h! Z" \% F$ J" n
* D, J" P0 Q- C2循环语句
6 f" u* X' @, ` (1) from <statement sequence1>( }: R/ {% e7 ~
until <condition> loop
: h, X& N; W, @, U7 f1 h3 O) d <statement sequence2>;
% R% g: y; \/ t; T end;+ n* x+ H& ~. ^2 |2 h: `+ _
(2) while <condition> loop& u4 {+ f; F; z7 X) y
<statement sequence1>;
\- a- i$ W, k7 i2 \ end;6 A9 r# Y: e" I$ s
(3) repeat % Q* B+ I+ [$ h& M& x$ {
<statement sequence1>;; j/ i) ?/ X- c* {2 k6 R
until <condition>;7 V' q) O+ y6 m3 p3 x) v
(4) for <condition> to <condition> loop" R. v2 Y. q: X0 G# S8 A0 z9 t
<statement sequence1>;
. T U* G% [/ L$ Q8 u next;
) _) T$ }* B" }3中断语句
% `+ L$ w# q" v3 T/ e# b waituntil <condition> prio <integer expression>;1 D& \( S9 m$ y6 p j( l
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以上为常用的函数！2 i2 T$ Y; `, S
还有很多，如有需要我把资料发到你邮箱里 " g6 `3 m6 A8 d( L9 c: S
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