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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
Q% P6 @5 C' w; L+ ~ if <condition> then
$ _6 R9 j: b7 P& A, B% U <statement sequence1>;
% w% g: p u; w$ _8 X1 R5 y- g elseif <condition> then
: [5 n# ^, w* R A, K& r( }/ P3 c <statement sequence2>;/ |: F8 `- f: n; ^% G% ~. T
else # O. J0 X1 e6 K# b
<statement sequence3>;
$ I6 x$ D; |, L1 I. F O5 B$ \ end;. A% J( h7 u- v9 w$ e B$ k
如果分支比较多，用：
6 P+ {! [( ?3 w1 R6 N, O inspect <expression>
4 z& i4 |* ]& N9 x, v, \ when <constant_list> then" @! @8 J4 Q* Q# S
<statement sequence1>;8 ]! r: u1 X$ B) q" X
when <constant_list> then
/ k9 S8 r; e* \" h; q <statement sequence2>;9 I; N/ {( \0 W) P1 M
...
) H, C: \ N2 ]& G/ B# B; d% A9 w else
* `! W6 [7 C! F8 }( {/ w <statement sequence3>;3 v$ ^+ t( b1 w. [! _- s) T
end;
5 T7 \: {& \! t
) _( \' D0 K; |2循环语句. D" s2 s! ]" K4 R- F
(1) from <statement sequence1>9 G6 y$ _ n5 Y
until <condition> loop
& ] b# N. e/ q( G; Q <statement sequence2>;/ j% y1 Q w, H8 i+ T
end;5 R4 l! w' i- s1 Y
(2) while <condition> loop( h# k- ^8 e8 J, O( D
<statement sequence1>;% ~8 E. D, T3 f- @ { V! s0 _
end; L( U x4 q1 ^! N4 }& ~
(3) repeat
9 n# k7 s) Z5 O0 h* f <statement sequence1>;
% E( U E2 }) R2 O7 {5 M until <condition>;
) C8 U6 S# w& Z! K" S: ]# c (4) for <condition> to <condition> loop/ W- Z, U+ p4 }; T
<statement sequence1>;4 O$ \. R5 m1 S. t% N: G
next;
# F5 P! `8 s% d" O! v3中断语句& B3 R5 U, _' }4 U d
waituntil <condition> prio <integer expression>;( J& `9 i3 d8 [, P
. Q3 g! {. a! @
+ z1 b$ D5 _; {5 ]! H3 ?以上为常用的函数！
9 Q6 j# p: R' K& v7 O- N, N还有很多，如有需要我把资料发到你邮箱里
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