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发表于 2012-11-13 08:48:12
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1判断语句
; z1 _5 Q. B$ T0 X) U I' y if <condition> then
" J8 X9 _$ O% l1 G2 F3 P <statement sequence1>;1 _1 A0 M4 H+ j1 q8 B
elseif <condition> then# g( A5 B* ~! I, I* Z
<statement sequence2>;
# a9 Q0 Z$ H3 ^! Q7 b5 l else
; _; O8 N6 w4 F1 V c7 I; C$ C3 L <statement sequence3>;) }1 a8 @% H- J
end;
, W! X+ h: t& ?如果分支比较多，用：
7 g1 h- i0 u; u inspect <expression>
$ @+ z' l7 i, x! Z0 b when <constant_list> then
$ r% {. ~; H, C& c% u <statement sequence1>;8 Q/ i) m M" e Q, P- d
when <constant_list> then
8 {0 z" ~: z1 ~+ K' N! h <statement sequence2>;
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else
& W( S1 C( @: G0 `& T+ I3 b <statement sequence3>;4 H/ N H/ N1 t4 x, H
end;+ s' I. G9 e9 K1 D3 R
: L% a s8 \; q) K) s2 v2循环语句
: [- q% h2 h( T, a0 I9 s2 X7 u (1) from <statement sequence1>4 L; M: I: U! g3 i; h) m
until <condition> loop, d5 q( y& l( K! V- r3 ]) M0 a6 g4 y
<statement sequence2>;5 q' F8 G1 d' @, v
end;
9 T2 S4 x' w/ R0 z2 D5 _' k) Q (2) while <condition> loop
; p1 Y: X) t( v7 U. n8 c& S1 t <statement sequence1>;
0 s( w" \' s/ y end;& A' D9 ~7 k( L: w0 n9 G% R
(3) repeat * }7 N+ _: ?3 \4 ^7 I v
<statement sequence1>;
$ }0 F* \; L: A0 }6 |+ e. a3 Q; A+ a until <condition>;2 I$ v$ r% H2 j# ]: N
(4) for <condition> to <condition> loop% p% f5 i; V( Y, T
<statement sequence1>;
! p+ L: d1 m; L+ ^ next;
! N# R1 W8 e4 V6 d( f- L" X3中断语句
! a1 c, w" t' H6 Q* y! X/ V# P$ F/ a- T3 h8 T waituntil <condition> prio <integer expression>;; G; z+ e% D, ^) w; w6 P
2 O* U8 ]9 a' B
% A/ ?% O, F, L: j9 A$ u# P
以上为常用的函数！/ G4 _' @( J9 e, J
还有很多，如有需要我把资料发到你邮箱里 ) m, Y# a5 v* }$ ?* P6 [: X
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