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发表于 2012-11-13 08:48:12
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显示全部楼层
1判断语句
$ H" X4 c/ s; o( z# H& H if <condition> then
- g5 Q% `9 J$ e1 |2 Z& ` <statement sequence1>;# b ~: o& x. x2 n) {9 c4 Y. _
elseif <condition> then, I* ~' e7 S5 T( y% a
<statement sequence2>;$ V8 c, m7 P5 ~4 q1 w
else 5 {( a: b* W* `1 Q1 |
<statement sequence3>;$ M1 U# h! A f! r% A( v$ z
end;
& _/ m ?: L0 E) y6 g如果分支比较多，用：
" S: e/ s4 }1 M/ j$ i5 h2 @ inspect <expression>- U: c; X9 U/ x9 r. J F
when <constant_list> then
# h% y* F5 k: ^5 K <statement sequence1>;
3 w# o+ b. t8 \6 ]# r( e when <constant_list> then
8 C8 W% Z9 K. W0 O# A0 i3 S <statement sequence2>;
( Y Z0 ]5 F) z .../ m+ d$ o% ]4 W% \
else/ i8 z$ A! d# k
<statement sequence3>;; }; Y- P9 z2 o: X: E: c7 `
end;4 _0 k$ R5 W/ w, `4 ?' x
4 N/ }, }+ o6 h" E9 ^2循环语句2 d- k3 S$ M' ^" ^
(1) from <statement sequence1>. _1 G+ j5 x. E) |
until <condition> loop
5 Y, W! O9 F7 M% P <statement sequence2>;( x0 F4 {$ v! N9 S
end;' d+ K7 c" m! V% p* i' G
(2) while <condition> loop
. V) h7 b" z5 @9 _$ K$ V <statement sequence1>;, |4 v3 F; A, Q
end;
/ B* H/ ]: A7 L3 y# F (3) repeat 7 J4 j8 |; v4 U" \4 e5 w+ b
<statement sequence1>;& a. @* s. b0 [6 G c, p/ r
until <condition>;) n ?$ D: R5 h0 t
(4) for <condition> to <condition> loop
- X: o3 v ?: k& t/ \5 {/ Q <statement sequence1>;
& a8 f+ z( i T next;: n9 `+ q) m+ S! N# D
3中断语句' u) O% _: o# r. c
waituntil <condition> prio <integer expression>;
: R% e ^$ M5 a% Q/ \' |2 u; x4 K6 c% F; M4 K: H! f
* _3 y, q- d; N0 M# Z, p/ u以上为常用的函数！
/ F0 ?2 Y, _5 y& \7 @! a& I还有很多，如有需要我把资料发到你邮箱里 : \+ {: H! g* H' }3 x
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