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发表于 2012-11-13 08:48:12
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1判断语句8 ~: Q2 S7 G8 c5 k' Y5 j) G
if <condition> then# B8 w9 F* c+ q/ [- A
<statement sequence1>;
; D3 v8 A, ]5 p* e$ g4 B: n5 t elseif <condition> then" |% C' ^: ?' c& [! ?
<statement sequence2>;' W% ]) c2 x. k6 R( r1 {0 \6 Y
else
# b$ K) E! Z8 n* U0 Z5 C% D& ` <statement sequence3>;
. O4 o. N& o; b8 r9 ] end; t( W) f$ a% p+ c* Q3 y* Y/ n) y
如果分支比较多，用：6 l. y0 j; q) @
inspect <expression>
; b; n- {, j6 j$ ]5 I" a when <constant_list> then" ]4 a# m/ f, h& R, Z
<statement sequence1>;; D2 U$ D* }' U
when <constant_list> then
( t6 ~- ]! U2 j- r <statement sequence2>;. F. p0 Q6 g- m
...
& Q6 m( }0 u- v& O5 L( B5 l else* i" I- X, t' U9 n
<statement sequence3>;
2 P9 [2 R' U: V/ z3 jend;
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1 n2 Y" ^6 N3 N( E& y* H2循环语句9 z1 A. v. t$ v$ @
(1) from <statement sequence1>
* u) L/ ~, D! w" W& q until <condition> loop
% U8 f& Y7 f8 U$ y! Q& g; j <statement sequence2>;
, J4 t$ N b/ O7 ~ end;" R: T1 }( W/ D" y
(2) while <condition> loop& ^* f1 P4 k8 m* e! \/ K6 n% |! c
<statement sequence1>;
" c* ]7 z3 ]) R0 P# Z end;
: h2 W) p. C% i( d M (3) repeat $ [5 e5 B3 O4 u( t" y
<statement sequence1>;
5 b: @ x0 O+ ^$ [. D6 Z until <condition>;/ H" L- j% v* a
(4) for <condition> to <condition> loop
) P( A& H6 F7 R8 i <statement sequence1>;3 G9 M( v4 ^5 a" F+ q
next; v2 l5 }1 v$ }) @5 K( P3 `3 a1 ?
3中断语句% V4 g1 q$ C/ y& Z; X& x
waituntil <condition> prio <integer expression>;- W1 u/ J6 `' H6 G2 W5 C! I
, z- K4 {+ y0 ?( _: e# e3 R0 n* B- m6 j+ C# I9 {
以上为常用的函数！
; W. d+ V F" L7 n% M还有很多，如有需要我把资料发到你邮箱里 ; J' u# L# A! e$ h# e5 v" z
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