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发表于 2012-11-13 08:48:12
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1判断语句
! F& Y* Y- E o6 B7 ?3 q" D5 H7 e if <condition> then2 i4 I0 j* ?1 W$ V+ b G
<statement sequence1>;
% s; B; ]( Z9 j! n9 s4 k elseif <condition> then
$ S' _4 u+ a1 ]+ M! e9 K) C% ~0 S <statement sequence2>;
6 ]+ \" |+ x/ [. u$ P0 f else . @& z) P. m) @- h/ s' H L5 f# N
<statement sequence3>;
8 F! T0 t) D. s/ m b/ n end;
. Z7 H) U! Z6 [1 B如果分支比较多，用：
2 P% k2 t* n, Z3 W3 Y inspect <expression>
8 W6 e- J9 g' o* c7 g when <constant_list> then& T# S e% }2 Z, C m& b7 W# ^
<statement sequence1>;
% j2 j( c' j2 B% {" [- R when <constant_list> then
: ]) _/ q8 m0 { g5 U; O3 V <statement sequence2>;
7 g( p/ Q% R/ H! G1 }. z ...
$ O- Q9 c) c4 C# ? else
* _6 Z- D" P2 f) Q' N3 u# B3 B <statement sequence3>;+ o* [2 F. p, Y- Y/ \, j A% J
end;7 w. w7 N; l' P( P! T6 r% ^. G
$ g7 T/ N- V; Y5 `) y8 x# @2循环语句
8 J5 w: N$ {: W (1) from <statement sequence1>
: R3 k, E" R9 n0 o6 d until <condition> loop+ E# R$ ]8 L4 C$ q$ d
<statement sequence2>;
# t; t' Y8 g# X h8 y end;6 \1 S3 `+ n; e4 F( g9 e
(2) while <condition> loop( ?3 y# H( [8 g4 t; `
<statement sequence1>;' O9 z7 P$ m$ c- J5 M
end;
2 R) {. t& Z3 ]# x x (3) repeat ; a% q& l8 A& r, E$ i) @; e9 ?
<statement sequence1>;
9 G; G) p3 z# Y5 ~. c until <condition>;
, M) j1 O+ u/ V$ R, u; q1 ?, _ (4) for <condition> to <condition> loop4 x1 \% C1 n& v* z2 J( N
<statement sequence1>;) V( o1 C8 _/ n8 y. w$ m
next;2 | p& S$ |: K [: W
3中断语句
4 }. d. p) v* [' L# L waituntil <condition> prio <integer expression>;- x" [: r# W+ B6 W0 H
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以上为常用的函数！
* ~7 \! ?7 J1 H, W2 G还有很多，如有需要我把资料发到你邮箱里 # p7 E; m. Z l) L) J% o
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