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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. d2 C m3 b4 \ |' X( N; R
if <condition> then
: A+ r* n% a, a <statement sequence1>;" p a8 G+ W9 [- l
elseif <condition> then, i6 r: d0 ]8 ~
<statement sequence2>;. F7 j6 ~1 M9 Y
else " v; M6 m1 f# E; Q' t# F
<statement sequence3>;4 X+ A5 E% Y5 e2 |/ i
end;
5 e" R5 N$ o) g' ^如果分支比较多,用:
+ B2 i' p: a2 _( G3 X- @ inspect <expression>6 A# \# O& g% ~1 H) y* ?" x+ D) `
when <constant_list> then
! F4 I7 a9 \/ `% m% B2 K V1 A) x <statement sequence1>;
( V; I* H$ ^$ e- I; D when <constant_list> then
; B( c; G# t8 d% w" ]1 [ <statement sequence2>;
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else, I2 ]- N( }3 B4 j. @6 c
<statement sequence3>;
( z+ j' z- s5 N% A4 P& Pend;
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2循环语句
( c- Z: P2 J( p+ z (1) from <statement sequence1>
^! E. F, ?+ c; H: h: x6 \ until <condition> loop8 u8 L1 i5 g: b. P
<statement sequence2>;6 h6 ^( @5 O9 q) |) x4 |
end;
' D8 O. C( f+ c/ n1 e (2) while <condition> loop
4 ~& \+ `4 X% E4 M3 W <statement sequence1>;
3 [* J/ J0 i. X( L# _1 j+ X# S. C end;
. x# f( P% f4 a$ j4 C+ n7 j (3) repeat ) v- k" Y2 E1 v7 N) G7 ?
<statement sequence1>;
7 e/ F6 v0 `2 D, O/ A1 n until <condition>;
$ f1 u! s: T. Q (4) for <condition> to <condition> loop0 V8 |2 X$ [% q5 f4 G
<statement sequence1>;& v; J4 z. D; _2 t* b+ _
next;
, |. @3 D0 |8 ~ _: f3中断语句% Q5 Y, r2 G( I' Q- z6 @! Y6 k
waituntil <condition> prio <integer expression>;
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0 |2 I1 u) z+ M( g% }以上为常用的函数!
+ d/ |/ x3 X8 r+ T& \还有很多,如有需要我把资料发到你邮箱里
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