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发表于 2012-11-13 08:48:12
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1判断语句9 o( ]# x+ \9 X
if <condition> then
/ j4 X5 Y4 A5 R1 u7 \$ _ <statement sequence1>;
9 m& s8 W7 N1 y* X+ J' c" W elseif <condition> then
# m+ \; l# @/ v9 T- _+ z <statement sequence2>;
; w4 P+ {, m' ^1 y else
, z6 }% z; b7 M8 t# X2 O <statement sequence3>;* ~3 L# G3 _) j+ d! S" n. |/ i
end;7 i' v Z, P* M. L/ M: t) a
如果分支比较多,用:* D9 ?7 e. [4 B& H2 A+ a
inspect <expression>2 w7 R! _" h1 I4 L) h) }9 V( _" N2 B4 H
when <constant_list> then
& w: }4 a" a( Q <statement sequence1>;) m, L: R8 c, d: c# w, {2 g4 y
when <constant_list> then S9 G4 m6 b5 N% K7 B% h( E% q
<statement sequence2>;
9 C# B$ z+ Y. F. P2 H) P. @6 s$ @ ...
/ J6 b. Q6 E! Y& U5 m- b; R& t+ D else
, g' _0 ? J' a& h+ ^- x* D <statement sequence3>;& s* ^0 x3 d+ y0 L6 {9 H
end;
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2循环语句
3 c1 i1 j! {/ a# [- F (1) from <statement sequence1>) r+ x; Y' }2 m
until <condition> loop# x; d6 i! N8 x. [7 Y: g9 m
<statement sequence2>;
" @ v" D0 o- @ end;
I& C! I8 e; `5 j6 H6 Y (2) while <condition> loop- G; o* b/ o$ ]: Z
<statement sequence1>;
) M. ?# Q/ r+ ~ end;
1 v; ?% N2 m8 l' o0 Z/ k/ E (3) repeat - w. c' v2 a- s0 h
<statement sequence1>;
; `7 v( `: ?) T' s/ w# v2 z- I until <condition>;* U: O4 @: O7 @( t* L2 r
(4) for <condition> to <condition> loop
- W- @/ s) v* B <statement sequence1>;
^5 Q8 c9 k y6 M+ u7 g next;/ x% c/ j. H# {/ O4 J0 U- \
3中断语句
# M% h; ^7 |, K. G waituntil <condition> prio <integer expression>;, L* t7 W4 V( w& M: ^
. Z% B# H' ?( n: }% s- c! J
7 I/ c% w% x' F. {
以上为常用的函数!
* J* r$ w0 E7 f3 }/ _6 n0 N- z, t2 V还有很多,如有需要我把资料发到你邮箱里
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