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发表于 2012-11-13 08:48:12
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1判断语句! y3 T, v' y* n' }8 r
if <condition> then) C& C9 z# ^8 f+ i- L
<statement sequence1>;) L( _) I( i* v
elseif <condition> then {5 V( O' N5 J+ ~0 g4 M
<statement sequence2>;
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<statement sequence3>;( Y6 m5 p- d$ V# K8 j" M
end;6 P- v! z: `$ W; B
如果分支比较多，用：
' E, n6 |1 v" f" v0 E inspect <expression>
" d9 e7 U5 c8 [/ F. P9 y when <constant_list> then$ h+ f, D/ t2 p. v
<statement sequence1>;
s( n' U5 \. E" t* ?" F% k when <constant_list> then, k& R3 m" C, V/ C9 T6 H+ M4 \/ d% ?
<statement sequence2>;
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else4 R( m" g3 t4 Z9 t1 v
<statement sequence3>;
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6 ?5 J# s' { f# y2 @2循环语句. k6 y# F" @; ?, W% U
(1) from <statement sequence1>
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<statement sequence2>;2 P- S) P9 }1 v7 s; D. \+ B
end;
5 {; N! P3 h7 ~5 q2 g. r (2) while <condition> loop m" R( s+ y8 c! O- u; V: [
<statement sequence1>;
- v5 l3 Q; Y: U M end;
, b3 m) _2 J" L8 d* C. P (3) repeat
/ M$ g. s2 \+ ?( z2 _, L% l <statement sequence1>;2 K" l! Q& y2 Z7 L' L& R
until <condition>;/ h! x' I0 \; I1 F- T4 j& b
(4) for <condition> to <condition> loop% M2 O! _( t$ a9 o* X, T
<statement sequence1>;
3 ~9 z3 E, X5 v0 k8 x next;8 Y' N2 J, f7 P/ q& u0 q) S: M- Z$ H2 |
3中断语句% m6 q* _( K A4 ~4 P" i: S5 w
waituntil <condition> prio <integer expression>;
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以上为常用的函数！
, t8 ~+ ]; q" x; H& F还有很多，如有需要我把资料发到你邮箱里 * P* x9 k& C1 \8 p: b/ z
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