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发表于 2012-11-13 08:48:12
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1判断语句$ C: H6 i" A& k: c* E
if <condition> then
; E$ u$ l1 X: N, Y <statement sequence1>;
0 Z$ k5 h$ z3 d; ?* p/ J' S7 G elseif <condition> then7 c& H5 d3 F# L
<statement sequence2>;0 e, f5 }! [. ~, w' c/ x% e2 U7 E
else
) l. m$ b3 l4 r; b+ T& Q3 a% s- _+ ` <statement sequence3>;) K9 M1 B% D/ \' k* H4 E. u
end;
9 z4 B5 L, w4 [8 u6 z5 g. ]如果分支比较多，用：
% C! D" y; x' x8 x% C inspect <expression>* a: Y8 G# {9 b* C/ T
when <constant_list> then. U$ S' l7 |4 k& L0 A( {
<statement sequence1>;. y2 P0 {3 a+ @0 `
when <constant_list> then7 @/ m; V2 p' G8 l
<statement sequence2>;+ G, ]1 V2 y$ t+ E5 ]3 S# H8 O
...
9 _ z) s3 [9 o; U2 g( y else Q n3 R1 ~ W( V# O8 }
<statement sequence3>;
$ d3 A5 d' g! x' y0 w7 _) zend;
4 m5 b g f3 K2 q& p' P* @* {, C# `0 |& ]$ u% D ~3 x; v) i
2循环语句3 k5 h! |* j& D% ?, t$ y' b
(1) from <statement sequence1>
$ R* t+ i" U# w& w+ d until <condition> loop
9 u2 J! I( f6 V <statement sequence2>;
\0 _9 s3 @2 w! q+ v' o end;
9 v$ S* q& K8 o( _' }4 ^! u. W (2) while <condition> loop
( E& m) k0 k$ W <statement sequence1>;
/ c8 i: O* F7 B4 L2 N6 D end;
4 m) q( g6 e! d z (3) repeat ! t( f+ s0 ]3 @5 {- D2 y9 A$ H
<statement sequence1>;: l j4 e+ h; D% ]5 F3 D2 t; k
until <condition>;
* v4 O( W$ \4 C: p6 h8 S& K7 Y (4) for <condition> to <condition> loop
. _) v. g* f+ [ <statement sequence1>;" x3 ^8 w9 t+ \! Q, z
next;9 J( M& @' O, @
3中断语句
Y7 e/ P6 R8 I( U1 I waituntil <condition> prio <integer expression>;
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, r- l/ Q. R/ R8 {' |& q. h) ^9 F/ \$ `" k. {* o
以上为常用的函数！
: P+ ~9 y8 n/ v: k- q还有很多，如有需要我把资料发到你邮箱里 + G7 N* D7 a) e8 a; I( [2 h! h0 J
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