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发表于 2012-11-13 08:48:12
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1判断语句" T: L# K6 W4 N0 V
if <condition> then( ?* v5 N \ Q9 k. B7 d4 [5 o: x
<statement sequence1>;. W" w: r; L5 y( B/ Q2 M8 v3 r
elseif <condition> then; w7 |% f2 V- ?
<statement sequence2>;
1 h: ?/ z0 l# T! ~ m* t else 8 m9 @/ b9 e( w& d
<statement sequence3>;2 m, M T! }4 z) W
end;0 B2 ]; P) A1 e a2 |6 L
如果分支比较多，用：
/ [% D6 R) D, _1 x/ a7 H inspect <expression>
8 t! C, }- T1 j/ Q% E3 @ when <constant_list> then
6 n) u5 p, w/ h <statement sequence1>;
5 x8 I2 ^: n7 t when <constant_list> then
D% j) J3 @. A& \. e4 z <statement sequence2>;' T3 n" m# C% |1 e: t6 K3 K
...; P B6 Q! i! Q2 h
else* V3 B! F% U! \
<statement sequence3>;' x1 b" I- R6 t |" {! p
end;- ~0 ^2 S1 o Q
. v# f! a# I% [- C2循环语句
* G2 k, i; K0 o' v (1) from <statement sequence1>
1 p. @( c1 M0 v until <condition> loop( r/ I4 E: E0 g: D
<statement sequence2>;$ F; a5 Z ]& a2 v' a* _) c1 p* \
end;. \( T/ R' z: d/ a! y( w b
(2) while <condition> loop
# U4 o+ T! R7 X8 r# q0 Y <statement sequence1>;
2 @9 n3 z" d0 X- ]" }# C1 ?: Z+ C8 J- V end;7 k8 q; g5 g; \9 E
(3) repeat
* m) K. R) y" n9 |- w <statement sequence1>;% `3 I+ D: s8 {8 y: M
until <condition>;0 l& b* ]5 a. N/ W% J8 c
(4) for <condition> to <condition> loop g4 t3 I9 B; m' [, r
<statement sequence1>;
$ V9 m3 ?6 f) \7 A# x. B next;
4 F6 s, g" U6 c4 |' V n* |0 _3中断语句) F4 @6 v0 }/ U7 S. F% {
waituntil <condition> prio <integer expression>;( s4 Y! y3 b6 F! K" b% L
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以上为常用的函数！, A! q3 ]- W2 L7 ]& {6 _& d) E
还有很多，如有需要我把资料发到你邮箱里 9 k+ k6 s" h* s3 p
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