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发表于 2012-11-13 08:48:12
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1判断语句3 `8 a+ I/ b9 W' Z+ W9 C; H- R" b
if <condition> then
g2 T8 |2 S7 j2 L6 c" I( g' x& f: c <statement sequence1>;8 Y3 T$ F% u" a' W* L; C
elseif <condition> then
. R. Y3 T' |' K: L <statement sequence2>;
9 B) A J" [) \( }5 b else
. k$ F# ^- }! F8 G6 E3 } <statement sequence3>;6 {" |7 G% ?' x0 _6 W& w
end;
0 j3 ~* L- ?! A A, [如果分支比较多，用：
t* f- a, l) W1 h inspect <expression>
- J3 u: j9 X# a# k) O when <constant_list> then8 r a/ }: I1 u" V- l8 [8 u/ p
<statement sequence1>;2 U8 V5 e' {1 b' T. ?9 U
when <constant_list> then
. a$ c. P5 Q+ v* H! g, o0 K! e <statement sequence2>;
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<statement sequence3>;8 u9 G) Q5 Z. p
end;* y [/ e7 N# ?( N
- `5 E5 a# y; ~8 P2循环语句
1 i9 h8 a/ P& I" c6 o n (1) from <statement sequence1>
7 j8 K& D% w; M until <condition> loop' l8 C+ Y U# G3 ~8 m9 a+ _
<statement sequence2>;* p* l$ m6 o* a" u6 Y
end;( a' a8 {: F5 _6 l3 o' n
(2) while <condition> loop
% K+ e; b* C% D3 x <statement sequence1>;, L/ K$ \) U1 Q, s! A- \. ]5 t1 ]* h
end;9 R# ]0 n6 [- ?6 k: S7 X
(3) repeat
: g5 c% V) U: U9 J1 |+ Z <statement sequence1>;) b" w1 @6 [6 c4 _$ O& Y
until <condition>;
( e: I S4 f d6 q( b) p1 F) n (4) for <condition> to <condition> loop
& G/ o; ?; i, i6 v <statement sequence1>;' X r' B* s3 D1 t0 @& m! ~5 K M
next;8 w: c4 S. {# H9 l5 p" T. V
3中断语句7 S; a- e2 [: S
waituntil <condition> prio <integer expression>;
; a6 {! |( ~4 b# t+ U; |. \0 R/ g2 I9 _- o: d% U3 x% }
& M. ~( I$ e$ _2 e3 g. Z2 H) }以上为常用的函数！
6 _& ^2 |4 [4 |2 E# [! ~: k还有很多，如有需要我把资料发到你邮箱里
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