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发表于 2012-11-13 08:48:12
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显示全部楼层
1判断语句
: u+ [' q' J2 c' `) ^9 X1 t if <condition> then
. Z) m; C6 E, g$ f& U& h' _ <statement sequence1>;
' O2 ^5 L4 `$ R1 c" O% u elseif <condition> then0 b4 X2 l" k9 t+ C9 D
<statement sequence2>;
. u* j- [$ q0 S# {, ?: y2 L" h7 B else 0 ]3 b* I1 a* x& H
<statement sequence3>;
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如果分支比较多,用:1 l" a8 \5 S' o
inspect <expression>
) n" ~% O" B1 S4 f# j when <constant_list> then
2 ?/ w1 [9 I9 V" e <statement sequence1>;
9 m p) p, g, s. A0 h% U when <constant_list> then4 N: X0 C7 M( w3 l7 R' l8 I$ R
<statement sequence2>;
Z& P5 X5 P" G* g& f" b ...
4 T$ ^0 w/ j8 q0 u6 |- r7 g7 ^ else
# ^+ ^* I: b9 _8 A <statement sequence3>;
3 i# m, g! [8 G. }. Rend;
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1 G# J, n2 s6 W2循环语句8 @5 w/ p0 p1 L5 Y4 B1 ]! [
(1) from <statement sequence1>
" u9 p7 V) \3 {% u' a# A until <condition> loop
& }; c: ]. d& c" P1 E6 N <statement sequence2>;
8 V( e. Y- `; z5 b/ B& S- v end;- n. t# {3 }3 s. r* @
(2) while <condition> loop
6 k( n7 {: q$ T( p! ~0 P5 m3 ~ <statement sequence1>;
- c/ e0 p i, i9 [2 M! i% ` end;6 Z7 w; U! c* |, M" o @8 L7 R
(3) repeat ; q9 d6 I+ Q* I) E& c! x
<statement sequence1>; m; c" Z, d1 q% I
until <condition>;8 k% x3 U" R" H
(4) for <condition> to <condition> loop
# B6 T( @8 D7 u% X <statement sequence1>;+ d2 o2 q! G, P4 {- L
next;
' |/ t0 {- U! S3中断语句
, n. I$ f! p3 s# P; s& q# g waituntil <condition> prio <integer expression>;- R. I, \0 k0 N; l% q4 {1 u
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" S# u9 N9 u" K3 Z, b/ E/ V+ O, ~以上为常用的函数!! J% i+ ^, T4 H2 b( D
还有很多,如有需要我把资料发到你邮箱里 ; T! P. s, R* c
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