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发表于 2012-11-13 08:48:12
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1判断语句# u+ b K* ?8 y, l+ n+ {2 E* V
if <condition> then
# r! T, P7 y! [( S/ {9 o' } <statement sequence1>;& ~& q3 E0 F. L) j9 ]4 n3 |
elseif <condition> then8 R4 ?7 @6 _7 |0 L6 _' w
<statement sequence2>;
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<statement sequence3>;
, }8 q/ [, D) _3 l/ r( f: Z' V# R end;
. Z' a( K4 Y* @( ?8 c: k0 S如果分支比较多,用:
1 s( @6 p7 L% e inspect <expression>& Q J+ q9 f. x7 ]) N3 f/ |2 h8 S
when <constant_list> then
$ t' x8 M, U- v$ f1 N6 B+ \ <statement sequence1>;- n; w$ M# k5 G$ j3 |. H8 ]
when <constant_list> then
$ W$ V8 V- H1 A) x$ n9 F <statement sequence2>;+ E0 Z' F; J: f1 p+ L% T( U! [' x" O
...
3 j+ P7 w# v6 u! D else
; \( s+ Z( S! C' O- R4 { <statement sequence3>;3 j# Q2 ~1 _( Z/ O8 C
end;0 l5 s7 v7 _2 h9 j' W; @
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2循环语句+ b+ g J0 k4 i+ C1 \
(1) from <statement sequence1>9 N* Q2 N; [; C& f- P& W/ M# V
until <condition> loop
9 u$ ]. D5 g# \ L! F8 f' C <statement sequence2>;
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(2) while <condition> loop
1 F5 `9 T+ J. j$ ^- u% ]4 F% U- x <statement sequence1>;5 l5 e$ I, x8 L
end;
' K: I0 B& Y- J, z, e9 d* ? (3) repeat * ^' q, P$ x# z5 g, ?# N
<statement sequence1>;
, d! e- a, a" {2 n( x7 r' ~ until <condition>; U1 t! P' d- Q$ `" w; q( ~
(4) for <condition> to <condition> loop
& T! J( J! F5 _" P <statement sequence1>;: G9 k: f, a+ x* S, c1 @
next;
( k) i% o) u1 q3 X3中断语句
& L% P( Q5 i1 o3 K# Q/ h waituntil <condition> prio <integer expression>;5 {- l% l. A/ @* A) U
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以上为常用的函数!
& i# y5 }+ f* ?9 [7 u {# i还有很多,如有需要我把资料发到你邮箱里 " g) ~7 c0 y1 \
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