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发表于 2012-11-13 08:48:12
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1判断语句/ Z2 y& N/ N4 @) h+ U# Q
if <condition> then
" Z* q3 Q8 \# i& \' d& o' R <statement sequence1>;6 L8 E$ m' l, e6 P2 S4 Z" b1 w
elseif <condition> then5 x* i% v V+ z8 k
<statement sequence2>;
2 J3 i) _: j. ?( D else
; _: ~8 ^! r9 Y; l# P" L <statement sequence3>;9 g- H; k' X1 K! s( ^
end;
! \: I0 t% u$ `' t0 r! K如果分支比较多，用：
0 a) z1 h9 p& k' w7 u inspect <expression>- h6 w4 I8 `; K, l' r* Y
when <constant_list> then; r2 y. Y/ A9 C, L$ T; v( I
<statement sequence1>;1 r# o, j9 o8 ~3 ~0 f. ?/ F
when <constant_list> then( k' z$ `- K/ G' |* P+ N( b5 B
<statement sequence2>;
, `/ C5 M& Z1 V3 l2 Z; { ...
: S0 W7 U! f7 r' | else
1 `7 l# E) t f, r- F8 `* E) M <statement sequence3>;. e- k$ s# q' @4 D7 w
end;- j6 T* W5 P4 C$ x9 z6 }
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2循环语句& d0 l' w$ H$ v, J8 r* b
(1) from <statement sequence1># U# r. {5 D( r8 R2 `3 q5 a
until <condition> loop( ?4 g; o! K# k' e' ?
<statement sequence2>;
% n& C8 c- ]) c$ c" ]4 T3 q1 g5 ? end;
% v5 D& J! X' _: P' I$ Q (2) while <condition> loop1 ^4 X7 A' x% f7 g% j
<statement sequence1>;
6 X- Z$ x1 x2 f: z9 q% x! ? end;
7 Y2 k. N5 p4 ?0 g: x- N (3) repeat 2 ?+ x! E% {3 d. B9 Z! {
<statement sequence1>;& H0 y1 Z; b/ d/ S: X& G
until <condition>;
! l% V7 W' D( Z- u9 b9 v (4) for <condition> to <condition> loop
" u) M) r: r% l$ \- I" c <statement sequence1>;
) U! E; B% n) U3 F$ g2 k' q next;
& g3 f4 |. k6 x3中断语句
$ F! B7 F0 T ^& u. g8 [, T waituntil <condition> prio <integer expression>;
$ {, {* A# V. T" v8 X/ c4 Y- f! A$ X5 r* D
, V& y. t% e. p% r. }3 E以上为常用的函数！6 a' I1 C7 s: T
还有很多，如有需要我把资料发到你邮箱里
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