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发表于 2012-11-13 08:48:12
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显示全部楼层
1判断语句
/ q$ V, E4 t0 J6 o7 C if <condition> then
. _; G: i4 d: u# E <statement sequence1>;2 k, [& Y0 B7 d. |2 J5 J
elseif <condition> then6 T2 T( F( R9 V& r4 W
<statement sequence2>;2 L2 k D. \5 @5 F5 W; Z" A
else
6 _ s$ ~! G8 n" x& C' z <statement sequence3>;" P2 c. ]) b) v, o
end;( e" U( E- y( Y- l) A' b
如果分支比较多,用:& {. M4 I, t$ S. c% p" G
inspect <expression>5 ^# J9 H* @9 f
when <constant_list> then) A. [5 w. f: }( N
<statement sequence1>;" s. k, f. U7 b) m! v& i% `
when <constant_list> then/ x9 W1 Q( ~/ I& y+ q b. K
<statement sequence2>;
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else @6 y6 W' K n% c$ w5 U, d- U: ~
<statement sequence3>;
% f1 I) o( X# N9 J0 W; eend;
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1 c5 E" b" T. K7 A! C' t6 u; m2循环语句
- y& J( c' G* H5 `: h) @ (1) from <statement sequence1>8 e( X! w0 z( ]4 ~6 Q9 {1 u$ J
until <condition> loop# O2 U( p" n' w, ~2 U: O: m
<statement sequence2>;
9 f8 j% v% ]( t5 C8 n; L, F5 B end;
" ?8 T% T: G; j (2) while <condition> loop6 h: E2 K# Q- F
<statement sequence1>;
6 p3 g! d+ l" Y+ m" }0 u end;& c5 c( d8 v Y: [4 T' ?! t
(3) repeat
4 U9 g0 @& Z/ K$ ^ <statement sequence1>;
' C& ^: t3 B, |, C until <condition>;/ p: n9 i. W4 K: c5 _* p
(4) for <condition> to <condition> loop
) ]& s I6 H3 H2 m, J <statement sequence1>;
5 B& T/ p4 w( o" L8 H3 _" j$ T next;* T0 d/ c2 e1 p1 {2 F7 L
3中断语句
' h- s% _. U( V# c" e$ [ waituntil <condition> prio <integer expression>;
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以上为常用的函数!
; S. m- I. `% W& Z# B5 C还有很多,如有需要我把资料发到你邮箱里 3 i( i, ^& Q; d/ V: e M
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+ |$ Y9 t) V! I9 o
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b/ e8 l. w: E8 z + N5 k+ e9 y0 L, w& c, k e$ B
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