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发表于 2012-11-13 08:48:12
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1判断语句% O6 @8 e; L6 x& Y
if <condition> then) a7 q! P) n1 u* i: l$ Q; S2 p. E
<statement sequence1>;
: m! ]1 {8 [3 b' S; Q5 n; X9 t- g* h elseif <condition> then
2 {6 F+ b$ x6 c/ \* Z <statement sequence2>;' o/ R U. o7 t8 _. n2 e
else 2 h) H* o4 d V% {8 s
<statement sequence3>;3 x# w* N9 I' E$ e8 n2 ?6 G
end;
' c1 A! x. ?- U# ]5 U4 _如果分支比较多，用：
1 o. ~5 r* r8 R: j U+ x inspect <expression>7 a. A" k$ {+ T) X5 z
when <constant_list> then* ?! ]0 v* _* Z8 ?0 @& Y" w5 n
<statement sequence1>;0 v' r7 i" [8 H2 t5 o
when <constant_list> then
- `8 l5 D8 p0 l; a* q6 ], r <statement sequence2>;* z! a% }: E! @5 P% l
...
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<statement sequence3>;
: t; g0 R* n7 Q$ Z* f- p6 yend;/ `4 a! o3 z4 w- b
J0 u5 t1 B6 \% A. s2循环语句6 a/ _6 e/ s3 ^* h+ `
(1) from <statement sequence1>
' P% w4 }. z; D, K6 ] until <condition> loop a2 P5 H, x0 m9 }- U2 a
<statement sequence2>;
7 o7 o3 f' p* Q1 F end;
& w4 R+ j3 \5 D; A/ V" |' l (2) while <condition> loop
$ g+ J @3 D7 r# s+ ^ <statement sequence1>;" b) D: F; J: Q# Q$ }9 m8 T
end;+ ?* s. o9 ~; P1 i/ p6 t- N5 v, {
(3) repeat % i9 X2 o) D8 k! q
<statement sequence1>;6 s8 Z) A+ I/ i
until <condition>;
& N. A+ E j' B, R; ]) T9 X (4) for <condition> to <condition> loop ~3 z. [+ H/ D$ V8 a" P% x5 y! X
<statement sequence1>;
/ m" z h9 ?0 y6 G( _ next;
6 G2 m# F6 j+ S; v; o& @9 J% k3中断语句
! o: M3 v0 O5 P! s waituntil <condition> prio <integer expression>;
) m" j! }+ @1 M, ~' z, d0 b, M8 E, O7 y! f
3 a4 P+ v7 d3 H {( x
以上为常用的函数！
: U9 m8 z! G% b# N还有很多，如有需要我把资料发到你邮箱里 - g# _( b: k: M1 N2 C0 b
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