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发表于 2012-11-13 08:48:12
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1判断语句: D. }7 P$ h* x4 ~( v
if <condition> then
2 j5 o( ]+ z2 S- v <statement sequence1>;8 o) [# n6 f! G3 c+ I9 Z0 e) u, Y. }2 Y
elseif <condition> then: q4 H/ e8 {' b, E2 Z1 D. M2 G6 I
<statement sequence2>;
: U$ M% m a* J5 B! D! U else
$ |& o6 w- _- {9 s0 P <statement sequence3>;" _' W, A5 u) Y: q4 H# v
end;, ^" t* F2 Z e0 M! T
如果分支比较多，用：% ~% ]' v+ w/ ^- c' O
inspect <expression>! \4 u0 C6 b7 D$ W4 v& A8 d2 E
when <constant_list> then! n8 Y( b9 n- |/ u4 C
<statement sequence1>;% {2 Q4 p* j& F5 K& C; o. I
when <constant_list> then
' Z% d7 Q5 V8 |8 [ <statement sequence2>;/ f- t- L" u8 {; t6 L7 o+ r
...8 T- l. r9 e- V7 x
else' i4 P2 f+ d2 J7 v- s. w
<statement sequence3>;$ D2 R9 g1 o5 L+ P( z" B
end;3 s) w& }/ g. m$ b B
* K1 `& _( S! C( j3 v2循环语句
1 a6 F4 N7 Y, ? j. L (1) from <statement sequence1>* Z+ j2 m. L: Q, s8 p9 l2 W. |
until <condition> loop
" w) f- G# H2 A3 u' D. U <statement sequence2>;
9 P8 d8 e0 ^0 O+ ]$ F, ` end;; n0 _3 u% f5 e& d" Q( h' \& O; Y' j
(2) while <condition> loop
* h4 _ S# h+ n; E9 J <statement sequence1>;
8 r1 O2 r. S. a9 x" B end;
( U3 U1 D/ o9 `. | (3) repeat $ I6 N8 x/ W0 U( Y B
<statement sequence1>;
7 P7 j4 w6 V: ` until <condition>;
9 t' c7 D: e0 I, T5 {( I7 @. A (4) for <condition> to <condition> loop0 N* }* d6 U( d/ R- ^& s
<statement sequence1>;
# ^; x) o& [$ w; o next;
' P; ?5 R8 M5 N6 O' Q/ I3中断语句
8 {9 x6 d2 J2 c: q4 H+ K* l7 l waituntil <condition> prio <integer expression>;
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0 h% m' P5 P+ Z/ k5 x' ~' e1 ]) X }5 u
以上为常用的函数！
; r$ H2 O2 t0 m- L6 l7 ?还有很多，如有需要我把资料发到你邮箱里 , e7 H7 F- M' e _7 D
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