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发表于 2012-11-13 08:48:12
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1判断语句+ r" B/ D5 m' T
if <condition> then5 w3 g+ N7 Z% V8 ]4 [2 a' |6 D: z
<statement sequence1>;! @( v" C0 S: w" y
elseif <condition> then; F7 a: V/ {) [5 Q6 ^
<statement sequence2>;
& J$ |( n: R8 @$ l2 P# c else & l# _ y; u0 x
<statement sequence3>;3 {8 H/ n1 h q- f1 C
end;' {" p# I) @3 u3 v: E1 R3 ~
如果分支比较多，用：
6 Y) P$ h9 Z# \# Q! T& R3 z inspect <expression>! N4 K( Y' |4 g% u& ?
when <constant_list> then
. Q/ C- q6 v# J6 r <statement sequence1>;1 z: _+ [9 W+ W: }
when <constant_list> then$ q( a# Z, \0 y* [
<statement sequence2>;
8 R6 f3 g: S# C9 V5 D ...
- \; o5 q0 a4 f4 b; H6 G3 G else
, Y& F ~8 H$ C& ^: |0 V <statement sequence3>;
$ W g( i1 ]0 ^1 Cend;! a1 f* y% G( @+ F# S5 D5 C3 k
. z1 k9 |0 @, m5 z* D$ v2循环语句
/ n# n0 W8 h& z! Q9 S7 j( ? (1) from <statement sequence1>
/ _; G8 @9 M2 S- ^8 I) Y until <condition> loop
; i9 j9 u( t% l/ t) l <statement sequence2>;3 x. X; A. q t" q1 U
end;
+ g3 U- m+ V9 Y: e* p (2) while <condition> loop0 \: G' w: t8 k+ K
<statement sequence1>;
. u- t4 Z4 i* r. K% h8 { end;
/ C1 |/ Q5 Z) O) N+ ^ (3) repeat 7 v* W$ D/ ]; H7 y2 A
<statement sequence1>;9 g# ~( |: J. y1 J) B! P* W
until <condition>;' ^; w, o) e9 D1 N! `
(4) for <condition> to <condition> loop
& W. X O" i9 y9 `, i) K" J: _ <statement sequence1>;
0 M2 Z, a7 V1 a next;
; e" W% L( u0 S3中断语句; ~. }! a: O9 A6 g" ~' f3 W
waituntil <condition> prio <integer expression>;9 p( M9 [# S2 d: O
* t: ]4 o. l1 f" c6 A
+ Q+ i4 s* R3 E: k* m以上为常用的函数！
+ k) I! R) a/ I) Z! M1 k还有很多，如有需要我把资料发到你邮箱里 u- \6 M% M8 _. q0 `0 @+ P; |
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