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发表于 2012-11-13 08:48:12
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1判断语句* W1 ?& S8 M' m8 o3 z% V
if <condition> then6 K$ h1 D$ Q( ]1 E8 c, |
<statement sequence1>;
/ z/ G4 d9 C3 w* R+ U elseif <condition> then! }: X( j3 z# q2 }7 u8 x
<statement sequence2>;
% N% g+ E* n# b else ' E5 D! q) w2 O
<statement sequence3>; `6 j S7 ? B' J/ F2 Y; t
end;! [9 s: x6 k/ H) x, N
如果分支比较多，用：
* m. M, C" m9 \( }2 p/ t9 i inspect <expression>0 R6 l$ K5 J8 V% K+ V
when <constant_list> then
( I- _5 t; M e9 v/ p* [% k2 z$ H <statement sequence1>;2 h5 m- {- W! g& y) z0 Q
when <constant_list> then
! ~# k& u+ W. C/ s4 c0 ?% U <statement sequence2>;
% I7 Y* ]" A0 O* a ...
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<statement sequence3>;. \8 \* T9 I7 l
end;
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2循环语句) w# u3 C! p: J. e$ |$ z
(1) from <statement sequence1>1 R$ ? @$ I* J P7 i: M' {, L
until <condition> loop, J O) \( B. z$ Y
<statement sequence2>;0 |; r8 a/ K! b+ A' ?$ k
end;$ j- h* x1 l& f
(2) while <condition> loop
4 @" T; }$ n; u8 Q' y6 G0 N6 D9 ~ <statement sequence1>;2 | l' l8 @0 K2 y( B
end;
2 v- k$ T6 b7 A* v8 O) X" c0 P (3) repeat 0 V5 ]# h$ L m. b
<statement sequence1>;; d V+ S* I: U8 b# x/ ?
until <condition>;+ d5 c" h, W) g" B L; g
(4) for <condition> to <condition> loop8 P0 W, ^& p- k; ^- U
<statement sequence1>;
+ D) r U" c" C next;
, n8 h R. H4 @. `3 k2 Z9 w3中断语句
& O. {5 ^5 l- w3 V waituntil <condition> prio <integer expression>;8 @9 b, \6 w0 e
3 A2 e! Y2 F% [/ s
; D; _* ~( R' e$ Q8 U以上为常用的函数！
* X9 q3 t) Y, Z: p3 F5 ^还有很多，如有需要我把资料发到你邮箱里
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