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发表于 2012-11-13 08:48:12
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1判断语句6 f+ z: @* D8 L( ]4 S8 F3 s4 {
if <condition> then
. L- ~ x7 j: q& K9 C <statement sequence1>;! ?. G8 G3 v% L5 j/ e
elseif <condition> then5 Q! e# O: J+ f
<statement sequence2>;
0 Q& F: c% f4 k- f: F% O5 t else ; o, i8 I b6 F, V9 }" e5 i& s
<statement sequence3>;
& D% R2 e6 E6 e6 ]: C; d1 M3 u end;
! B- @2 t. C) |* ^, r5 {5 t如果分支比较多,用:8 o8 o0 a* Y( w9 y6 m/ Y% u9 u
inspect <expression>
2 _. |$ M- ]! ` when <constant_list> then
+ |& | e9 r( R: T7 D9 B/ [3 k <statement sequence1>;) K" [8 ` i0 b" g* I# [
when <constant_list> then
* C/ Z8 F0 g' o M" a <statement sequence2>;
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else2 I" n S* a6 w' U7 L* _
<statement sequence3>;+ N/ @6 \% D- d, G( t. g
end;- m) x _. b, ]9 R: ~; f
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2循环语句. c3 I, [- G7 M/ ^3 T/ c
(1) from <statement sequence1>
. {, b& `/ T; {, \* ^ until <condition> loop
/ a" |8 T' J/ g4 O# u/ p <statement sequence2>;
" v6 x* y. @1 ^- ]- S0 K end;5 {, r! v( l' b/ i
(2) while <condition> loop
, Y1 s( R& ~. T& { D% M" C <statement sequence1>;3 M& Q. D# x9 q0 g' j5 t
end;
7 y& i- P! x2 ^& _7 L (3) repeat
, O0 N, c# t( b <statement sequence1>;7 v: j/ `. I6 e/ Y" H; Z
until <condition>;
7 r2 w; j O A- R' v (4) for <condition> to <condition> loop
6 L- {; D$ g" H; M <statement sequence1>;8 U7 } _! w: { K9 z
next;! v( K6 S: K6 W$ G" ]7 D- D
3中断语句" d% d0 p3 C$ d+ V
waituntil <condition> prio <integer expression>;
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# [6 T4 P0 i' y以上为常用的函数!
* C) h" [: U5 y, o; C' {还有很多,如有需要我把资料发到你邮箱里 : F! B. e& m- S ]
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