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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; I( \ O7 |+ ~$ l
if <condition> then9 L6 t# x, @5 S, f4 T
<statement sequence1>;
o9 v$ x! F9 X; V8 O/ I3 h1 S elseif <condition> then3 o+ `7 V, _& O3 x: X
<statement sequence2>;/ `9 R" D( G- e' t- M
else ) ~5 Z8 f& \2 }$ M' ^
<statement sequence3>;. O: ^5 ?5 g. w) l
end;
* y; y; M1 G0 T3 F( b, H如果分支比较多,用:% Z& W4 h/ q3 v" ^! l! n
inspect <expression>6 X2 W* s. m- p: J/ S9 {. S
when <constant_list> then3 h9 Q+ s3 x5 M' K
<statement sequence1>;1 X' j, |" N& H1 G$ e; f
when <constant_list> then2 F$ n7 ^6 l7 w
<statement sequence2>;
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else: X. c4 Y! o: e2 R+ s
<statement sequence3>;, y1 f" Z' Y4 b; R* j. z/ Y
end;, j& a: s9 L2 m) {2 R s: g
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2循环语句
& W5 }* C6 f, Y' w& { (1) from <statement sequence1>
" }6 D- Z8 d5 G/ c( D( l5 d7 n until <condition> loop) R/ a# H( n. w- [2 J' u( W
<statement sequence2>;
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(2) while <condition> loop
6 |$ f- p# \* _ <statement sequence1>;2 ^1 J B% {4 H* ]8 X! n( R. ]4 Z
end;
! R; g& B* M& c1 \/ Y# N. k (3) repeat
" M1 j* G6 g7 Z, O |" e <statement sequence1>;9 k& n. M' |6 l" {8 N9 Z' @. F
until <condition>;
+ u& u/ S0 i# ^5 e" g$ Y( o4 _4 Z (4) for <condition> to <condition> loop/ `: |$ m" H: |4 x' w+ w; _$ e
<statement sequence1>;
- q5 j1 S2 `! z' e' D next;
2 ^2 ~9 X+ U, j+ ?3中断语句
! E0 s7 b2 U; T9 B# K$ ] waituntil <condition> prio <integer expression>;7 T7 a, x* Z) y8 _, l
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: P: g7 _2 Y* p$ ^/ T$ V- j以上为常用的函数!
# w# ~4 }* }" S# D5 a; d还有很多,如有需要我把资料发到你邮箱里
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