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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) C) T, C J3 b% s/ c0 P) W
if <condition> then
* s& B) @+ @. N7 B$ D <statement sequence1>;- C+ H8 L" H2 W) l4 J6 z( d0 ^; u& z, j6 a
elseif <condition> then
: Y; J) G4 i' C) X+ ^& Y0 c <statement sequence2>;
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<statement sequence3>;
! l% @) f. W. Q D. E0 v" f end;
$ w9 `, {- m7 @7 h h2 d) n如果分支比较多,用:& T1 O- b/ F1 C' w# O: e. }0 T
inspect <expression>5 {. l" W) {% _7 z
when <constant_list> then! Z6 ?+ B3 K( j' g+ a' d
<statement sequence1>;
# t1 t, M( P1 T7 X( V8 W4 c! w when <constant_list> then
0 s- d+ w* [- k <statement sequence2>;5 b$ S w A" r0 D( E! `
...
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<statement sequence3>;) J1 X: Y8 B+ {3 u; |
end;
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2循环语句
& ^. @. U& w* f% v* o, l& M8 L (1) from <statement sequence1> y( R# k- @: m+ P& v
until <condition> loop4 [( t# `. R1 z$ {4 f: l$ p$ |. M
<statement sequence2>;; ?4 ~8 I: _4 y: z: w {
end;) {* U8 S) D( k3 ~; E& T- K
(2) while <condition> loop
8 A+ c) a- c4 |! q. N" S- a <statement sequence1>;
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(3) repeat
7 V! x2 I% s- ` <statement sequence1>;
, ^- S( P- k3 ~# [( [8 Z0 a until <condition>;
5 I! U2 t1 y. Q/ F; E ^9 B) Z/ g0 s (4) for <condition> to <condition> loop9 r8 l& w8 S5 |: r" Q* [
<statement sequence1>;
& z! t8 {2 j7 l7 L: H+ j next;$ `* j: n' f/ ?) R. ^. V% p
3中断语句6 X5 D* Y7 J r! A5 i* V3 ?0 {" j) A
waituntil <condition> prio <integer expression>;- w, R1 Z5 w8 |+ D& }
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以上为常用的函数!$ ~, b( a7 |1 [2 n" n$ v3 F
还有很多,如有需要我把资料发到你邮箱里 , Z& \8 O& h/ e
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