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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
6 G& G- b: d$ L3 R* t+ p+ t if <condition> then8 M4 L# t# z+ w {1 n
<statement sequence1>;
! _7 Z! @# e7 f' v' l0 x3 }$ ? elseif <condition> then& b N$ J; K X+ z5 f5 q- F, x; `8 F
<statement sequence2>; B5 Y& J d5 a' n7 }0 P
else
' B: o% ?# T4 Z: z, f' a$ b <statement sequence3>;
, l- |- J+ f0 H, J end;( {/ k+ L/ n' o9 L3 a
如果分支比较多,用:6 U# L; G2 W: y9 o( y
inspect <expression>
, U s" ^0 o' g9 _ when <constant_list> then
. h4 N/ M0 B3 A: h# P <statement sequence1>;
' y) B% R5 m4 j3 ^7 p when <constant_list> then7 o) Y5 F7 ?1 T9 t- j& C
<statement sequence2>;
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else6 T/ \3 ?& m7 H: S
<statement sequence3>;
5 h* a1 q) Y) J1 \end;' M, O3 D4 G4 x* N
( P8 |* i! g( G, E. K4 ^2循环语句
7 l7 F- |9 d" k5 b" c" L0 S (1) from <statement sequence1>
6 K/ N% z6 J4 b/ V until <condition> loop) P7 E& S0 w: z" a7 C2 J! e$ O
<statement sequence2>;+ R" m; Q) d9 D( y6 E& x
end;
- t/ u. M' G& b2 M* g0 `7 e (2) while <condition> loop1 y( \: \4 b! M4 z# F8 b' f4 p! X
<statement sequence1>;
A* @; o0 X9 u3 J, H end;
4 L! q1 D" I4 L5 `/ S (3) repeat : s+ `) A7 T7 |7 O
<statement sequence1>;4 J# U- t V8 y" }. X
until <condition>;
7 M6 ~6 R8 ~! i3 q1 u! Y (4) for <condition> to <condition> loop5 ?9 P4 l; j1 G( d) \
<statement sequence1>;, g* K6 W( |3 u: Z+ i
next;) n1 a4 B' T) {, s2 Z% v
3中断语句6 Y" R/ j* h+ w0 S! |' w) O. {
waituntil <condition> prio <integer expression>;9 W8 N, @' X: k/ o) J; d0 r( P
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以上为常用的函数!1 ] p& X- i9 w% ~ s4 B; V
还有很多,如有需要我把资料发到你邮箱里 & N/ Q6 o! F0 O, @4 T& t' m
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