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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
$ h2 I" h' y4 Q( V! S4 _% \# B3 U if <condition> then, A" C9 a# l5 Z
<statement sequence1>;
; v4 t. t) s9 E5 L& B H$ Y elseif <condition> then! U2 u, W% {7 a( j) X
<statement sequence2>;" h! }2 @5 a" i9 r$ D, x, q! Z% F
else 6 p8 c5 ?& b3 }3 t
<statement sequence3>;
. h( p, C2 |9 S end;
2 |# N7 p9 V* ]; n x. g7 C如果分支比较多，用：
. M, @3 W% K+ H4 m inspect <expression> ^$ c! }0 l0 x) W
when <constant_list> then
" U6 c; E; h' L# z' F- h <statement sequence1>;
! @ z4 f1 h' T4 |4 T% f when <constant_list> then: o* q* t& D0 M! v O' U
<statement sequence2>;
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else
$ ]% [- S6 B4 A. @& j <statement sequence3>;) \- y" e5 I- M1 n* R. X _
end;. T4 s; ]2 V, E! g: O" [* s" F
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2循环语句
3 o/ C9 P5 `1 N (1) from <statement sequence1>. o9 T) f# d. @; j: h
until <condition> loop2 Z+ f x' K1 }; N
<statement sequence2>; A' y% E3 ?; s6 j8 w, s
end;% ~, W i7 I0 s5 A3 n8 ?) D
(2) while <condition> loop
: T- f' o- x q+ j0 E2 t$ m <statement sequence1>;
- S) ]) g' M4 `$ O8 [" a6 p end;- Q, H1 L2 z# B2 b) d2 o4 Q
(3) repeat 5 W; L" ~7 u/ `+ }' o, T' y' m
<statement sequence1>;
* I. Q! V4 z* M7 P+ D# g9 I" { until <condition>;
! t, j; e3 h6 z" z (4) for <condition> to <condition> loop7 S5 g( P# R6 U0 Q ]
<statement sequence1>;: G3 m) j8 I" ?8 R, j, b, A
next;
! `9 m2 X; ^" C3中断语句6 z' F" C6 R' ?' x. w6 d8 ^
waituntil <condition> prio <integer expression>;. ^# y1 C6 y: \# b: N" I3 |
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6 p; f8 A5 U& \5 L5 V: \! Y
以上为常用的函数！
% F$ F5 \: u0 B. E9 e. ^* Z5 Q7 S2 L还有很多，如有需要我把资料发到你邮箱里 . v+ ~( \- N0 N6 S+ p, m. E
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9 {1 p4 x. _8 }: z3 P 4 j) g |) ~+ |) i# d" @3 `
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+ q) C% @5 P5 M0 V( Y
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