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发表于 2012-11-13 08:48:12
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1判断语句: C) w# X- H- {4 H: D3 n
if <condition> then# n U- E2 q5 ]6 M+ d/ S* b
<statement sequence1>;
/ |/ u! X8 w# ?% A elseif <condition> then6 Y$ `2 n: i/ T4 F1 B
<statement sequence2>;5 h# S* \% W( a" x
else
[% [. m& p6 B <statement sequence3>;! {! J; s- {: a& h& o/ \
end;
. Q0 i4 Q/ W1 z* ~如果分支比较多，用：
& Z; S: t& E, Y inspect <expression>+ Z5 @. B8 v: T3 G. j
when <constant_list> then
* e" ?0 V& b0 Z4 C, @ c* w/ F" z \ <statement sequence1>;; g) F4 A* U: q+ m3 J! c: G2 j
when <constant_list> then! Y1 O1 F; J8 T$ i2 q
<statement sequence2>;/ ?8 s# q' Y; @; H
...
# K) }: C0 ~ h7 c0 a5 w' ^ else
# l% |5 S/ {* m0 _5 X$ P$ B* L <statement sequence3>;( r! L1 }* `( _+ @
end;, i; {3 B- C$ W% Q- a/ D
! j. ~- S. S! X2 J% X4 m& x2循环语句
0 q* l( I/ z3 ~: D/ @; D8 ~ (1) from <statement sequence1>. p: N3 i' Y$ ?
until <condition> loop
5 X' X! \+ t; T& v, V( R5 x2 A <statement sequence2>;* s9 `& x3 N6 i: n( m5 X I% {+ o w
end;
' s6 [( V, j. E+ Y( C0 F. u (2) while <condition> loop" m' \ _, k6 W! n
<statement sequence1>;# J6 f2 R) X$ X4 q
end;) x' l! x+ g) r( n5 W; a& \' I$ b
(3) repeat
- ^6 l. g1 R, x' x0 s, b# | <statement sequence1>;
+ r P, z- w" Y+ M: h until <condition>; v& L9 ~- c8 `2 ?0 p5 i
(4) for <condition> to <condition> loop7 x" `: u W. K
<statement sequence1>;0 x; r6 W7 `8 I. l( S4 v
next;8 c/ y C' \) p8 Q O6 s
3中断语句( m7 Z' S' b" l
waituntil <condition> prio <integer expression>;
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9 c x) y; _$ j4 ~以上为常用的函数！/ r* f) O C! q% s) _5 ^5 w/ s
还有很多，如有需要我把资料发到你邮箱里
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