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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
: p1 ?7 I5 o/ @. h7 p7 X5 |$ k if <condition> then
" z" I: t# I6 e+ d$ G <statement sequence1>;. Z9 w s/ K. P& T0 \; O$ g
elseif <condition> then
: @9 I3 b& S+ {, p: H A6 d8 `7 I' a& ` <statement sequence2>;: m6 R( ?4 A, h* V
else
8 c* D1 ?/ w B y <statement sequence3>; ~3 ^6 ~. r# M O# d7 X
end;
5 u5 K* u3 Y H) y如果分支比较多,用:
/ l" @0 H* |5 N9 {0 N. p inspect <expression>
* b4 r1 |# V7 C+ G when <constant_list> then2 z1 R* a4 [7 ?4 E
<statement sequence1>; `8 r( a9 E+ U) c: F
when <constant_list> then
$ j ~. I K+ U+ s* c, f <statement sequence2>;
: Z, [6 }1 _5 b# r- V3 J& _ ...
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<statement sequence3>;7 b8 p- x. X% y7 D
end;& x6 K0 U& S, k1 ~) z: n& T7 _
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2循环语句
3 `. @7 a& ?- \ (1) from <statement sequence1>1 z+ J' V% Y. r" ~5 ?& H% N, z y& E
until <condition> loop
3 G$ Z; R, v5 ^) K/ I) {: H <statement sequence2>;, Z& v/ n/ [* ?" ~( q- y0 Z* n% z
end;
M: c; ~2 o Q) F L& Y (2) while <condition> loop
. A, J/ V v. ^6 |: L6 T <statement sequence1>;+ I, o2 G3 t) x; M5 I1 X
end;. I# E: d: g& e; r
(3) repeat
/ ]* i7 s# u* `. M; Q% c7 i3 o <statement sequence1>;2 R0 o7 {6 |' z, E2 `* v
until <condition>;
) h7 B( w$ l8 p/ R; L (4) for <condition> to <condition> loop
3 v$ r) k' B7 C; U- |9 k8 w7 q <statement sequence1>;/ z1 M4 o1 A0 M9 I0 V
next;2 l; z! d: I% g. B) ]' C& l& H
3中断语句7 }/ P. J& E, r5 z9 L
waituntil <condition> prio <integer expression>;3 H2 _' I8 ~$ k: q4 b
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以上为常用的函数!% G( f( G) S$ q5 J) I/ k9 o% Z, Z$ q
还有很多,如有需要我把资料发到你邮箱里 ' _2 ~# Q8 o, I1 b5 V2 A$ ]
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