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发表于 2012-11-13 08:48:12
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1判断语句8 \- T1 A% m2 Y7 _, S. t7 m# ^
if <condition> then
, @0 \, e! y( w7 p6 L/ D* I <statement sequence1>;
! v3 B! E. p1 i; o+ q1 X, f elseif <condition> then
/ ] y5 q+ W* K; U- V <statement sequence2>;/ S; o' W! `4 |
else $ A$ z8 d) [+ r( t4 j, S
<statement sequence3>;& w) f$ x( Z" F. F0 k: U! T* U. Q
end;+ i0 j* U3 G: O4 x6 u
如果分支比较多，用：
" y# V2 t, ?# |) o inspect <expression>, A/ @. [. U& }2 f$ s8 ~
when <constant_list> then1 p2 ~# W c$ \$ J' H5 O& @, [8 l
<statement sequence1>;" t4 a. u6 I0 n) t
when <constant_list> then, I* W4 S3 U* X+ [8 p; s, T
<statement sequence2>;" b( ~2 _" r; e6 i9 y6 Y+ D
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else6 \1 K' e* S5 y5 A- G' `3 T* y
<statement sequence3>;( B$ b' S9 n* e1 R
end;+ M* t# N; b4 m& L" f% t) R5 f t
! x' v, Q- d) w* h# T2循环语句
: f8 n( ?5 _0 b4 t (1) from <statement sequence1>
) r1 V! H* O6 ?" q" w until <condition> loop' A0 O U0 H K6 u/ V
<statement sequence2>;
- K* @9 t- i6 r1 l, T4 R end;7 y1 c) y1 `6 o0 ^- m1 ?& c1 J
(2) while <condition> loop% C6 K I+ q, ^; p1 t0 q/ a
<statement sequence1>;
2 a) G1 d! e' h/ s& ]% N end;
/ i/ B) a$ y$ u/ r! { (3) repeat
2 R1 k' i2 K, Z% p J9 ] <statement sequence1>;4 }; h' N( ?& y4 o6 ^7 w
until <condition>;
. X$ s+ S; G9 U, H0 W, T (4) for <condition> to <condition> loop
1 J9 G+ r0 | [# u2 Z, P8 Z) o <statement sequence1>;! n# n. a2 Y* } j
next;
, V3 T9 [/ I+ T5 W. h3中断语句! w, b1 {' {9 Y; G
waituntil <condition> prio <integer expression>;
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& T+ s+ c9 ^" V5 U1 G6 V9 N以上为常用的函数！$ A, Y+ V& w; U6 n) _# |
还有很多，如有需要我把资料发到你邮箱里 / C, e. D& c8 n6 M3 z
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