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发表于 2012-11-13 08:48:12
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1判断语句( l( z& Z& j% @: f
if <condition> then
7 z2 F6 L' I2 ^5 T. V' s1 r <statement sequence1>;4 l' o) D% \! d$ _( {$ ^7 O" s7 h
elseif <condition> then8 ]$ [: B9 W2 T4 [2 _9 b; z4 y; O
<statement sequence2>;( I4 D: e3 @( b4 N
else " m A' a. q, K; h
<statement sequence3>;) L K9 s$ d5 l! Z4 Q6 D3 O
end;9 j3 D; W# L4 Y8 J& j, D: f8 r
如果分支比较多,用:
( ^ G2 f: U4 s/ X* _. F+ _ inspect <expression>3 d' |" L$ d! Y/ _" m, G0 n5 B+ E) Q
when <constant_list> then
) F. g6 e3 Q/ e j- x( | <statement sequence1>;
" {, e; ?( X# l3 X% U/ k when <constant_list> then
' i, ]3 L& z) d% g0 [ <statement sequence2>;
/ K: ^* h" K/ I" T! U8 q) j ...
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<statement sequence3>;
) F Q1 x; I5 ~- u/ U6 U1 cend;: {6 f- L: V4 r' I! B: o
5 y! E) D% u7 b- g5 v0 o2循环语句2 z* F) q, @9 r. N1 B0 j5 K
(1) from <statement sequence1>
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<statement sequence2>;1 F$ f x4 P `( `
end;- I" l0 r1 W$ f) {. e
(2) while <condition> loop
' P6 |: i: f. E2 p3 C <statement sequence1>;
" Q2 _) A- Y" a- G end;' D' e- M. `9 `6 [: N# B
(3) repeat
* }$ c9 g2 _1 T" x* `; m' Z <statement sequence1>;
. v! k, V$ J# A! `7 y until <condition>;
) I; G @4 z3 n, G1 M/ R (4) for <condition> to <condition> loop3 Z0 O/ F" p I+ u7 T, O) c' p
<statement sequence1>;
5 o" U: r/ [- e3 c% k D- t2 K, E" x next;/ T# i& Z, ^1 y$ `2 G
3中断语句
: e4 V/ D- `$ _7 A& t1 H waituntil <condition> prio <integer expression>;, H* {/ F& \: f/ F% [& G
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以上为常用的函数!
! p% E: s' `" ?+ m还有很多,如有需要我把资料发到你邮箱里 4 U& {7 g; T# I4 m' N ?0 X9 C; t
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