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发表于 2012-11-13 08:48:12
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1判断语句/ k3 U3 d# [" |/ w6 ^: x
if <condition> then
8 o4 _2 f' `* S1 q <statement sequence1>;
/ ], B; R, v: E" P elseif <condition> then
3 Q) |2 E0 T! J) s3 a! w$ X3 y4 w" q <statement sequence2>;
/ G4 P! ~0 l' U6 V: H1 }. T else
1 Z( ?4 E4 C: U7 @) P <statement sequence3>;
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如果分支比较多，用：
/ z1 \, ]) T) T B: w7 P inspect <expression>4 {( i& \- R% d
when <constant_list> then! G: d- m% T, O$ E7 L' t0 b4 z" g! c
<statement sequence1>;
, }# ?8 }3 u& E/ j9 [' s6 i R* [ when <constant_list> then
0 F% t5 ~5 L2 L" W <statement sequence2>;+ P- C3 B* y* N5 e0 b* K2 {
...
. u& N6 _" c1 p4 Q" D else
7 i0 ` `0 [- c0 ?. z <statement sequence3>;
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2循环语句# ~! S9 I+ v* ~' F& |1 R4 j
(1) from <statement sequence1>
' |) [7 f. V5 J! i until <condition> loop/ i, k: @) k: S S" K
<statement sequence2>;& s6 t: r/ I1 l4 Y, e7 b2 ]
end;: ~2 t0 P5 w P7 ^4 `5 O, E- x! g1 `
(2) while <condition> loop) H" q9 |: P; N7 G5 j+ L! J: J" V6 F
<statement sequence1>;2 n8 G2 L$ C) t
end;2 R/ g$ \+ P; u+ `! h
(3) repeat # ]+ D' I# O/ {6 g
<statement sequence1>;5 ~5 m/ i4 N1 K" @
until <condition>;
, e) h8 J" S6 I, c (4) for <condition> to <condition> loop
. M5 l1 c8 H8 X1 k' y3 o- A <statement sequence1>;
6 v. y9 R7 ]5 h; \7 e2 ? next; y8 k3 _( C# k9 a" K6 j
3中断语句
8 T! {1 [1 m* `& _ waituntil <condition> prio <integer expression>;
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以上为常用的函数！
& b0 ~/ z) u: p- x还有很多，如有需要我把资料发到你邮箱里 2 ]$ F/ i: o9 x. y( B3 V3 i. K6 ]
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