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发表于 2012-11-13 08:48:12
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1判断语句
& g) [- K/ y' ]) g if <condition> then
# E: S0 U$ x& E% j3 Z+ V5 u: m <statement sequence1>;1 T' A/ d$ u; ?; w
elseif <condition> then
* F1 w, h, j& t+ m( I. S <statement sequence2>;
, l; w5 ~1 }0 _5 z0 g else : h' Z6 f# ^1 m0 f* N7 F/ d
<statement sequence3>;
$ e! w) m# z, }. x end;
4 C* q' M8 @7 Z如果分支比较多，用：
+ Q- Q. G7 z' E* ]9 A5 Z/ ~6 ~ inspect <expression>
, C; x$ }' {& A- j9 o when <constant_list> then# s+ m U. {# x6 `
<statement sequence1>;
3 x9 j, _; x0 v$ c& D when <constant_list> then( k* v; N6 `9 T! Q% J7 o8 @5 b; e
<statement sequence2>;
% k6 O `' ?+ O" D# u# Q ...
2 X, z* E' }- e: n! S% |1 b else
4 i [- |% t j5 ^( J8 b5 r <statement sequence3>;
& @- S/ E3 q' o/ H6 e" ]) P/ Hend;
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2循环语句# z) V: y' J. E/ U8 M9 W, b
(1) from <statement sequence1>
3 _* B! w; H2 y/ n until <condition> loop& S$ }- Q8 L0 z$ L
<statement sequence2>;- F4 ~5 }% u# v/ }
end;
( q& c$ {3 I4 v$ C6 X (2) while <condition> loop
' v' n7 i: R0 e N) }5 L <statement sequence1>;
5 @3 g! E' b4 D) q0 {* k end;
+ \, N! J+ D5 e (3) repeat
! _7 p' v0 u. r& L- u2 f, i <statement sequence1>;
6 ?6 E( h* ]8 u. {- s until <condition>;
9 C7 p/ f, R( L( N (4) for <condition> to <condition> loop B/ ?0 F0 Q% S, U6 l# C* ]4 C- X
<statement sequence1>;6 ?* [2 n) n( U, y
next;- u* |, q2 Y f5 p# I
3中断语句# Z, Z% x" b! R1 E. Q' t* O# i" i2 T: i
waituntil <condition> prio <integer expression>;
! [$ E% c" }1 a- |" B6 s% O! F6 u0 z4 h( P1 g$ O; c+ }! m
' O* s6 D. R8 e6 x以上为常用的函数！
& s n2 T# y6 N, \, ^还有很多，如有需要我把资料发到你邮箱里 " }& o3 B5 ^, @
, J0 \7 ?" \" m" Q/ q; e; `
u' h/ s; }' ^. \0 D! [+ F, T \7 {6 ^2 O! L6 j' R$ j3 b/ y" Y
; M" X3 j8 M; R, E3 k5 y9 c& }' K( R* B3 t
! ]: U9 ]3 @) o' s5 ]2 Y
) ?0 y* ^, Y1 e$ C$ m
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