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发表于 2012-11-13 08:48:12
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1判断语句5 A" t1 }9 `. ~0 u- g
if <condition> then
& G; W. r9 D, ^* H" c <statement sequence1>;
, i, g/ Z/ ]0 _4 p; g; c$ u# v5 | elseif <condition> then0 N' D0 N- x* R# z& z% b$ J
<statement sequence2>;0 F# B5 I5 w2 O8 I
else 9 I" K- H& e* y7 R1 E3 m
<statement sequence3>;
. H& O+ l* D3 o. F end;
* G4 R& |0 U, c* Q如果分支比较多，用：
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when <constant_list> then" F5 G T1 D$ D, Q1 K
<statement sequence1>;
& S: g% c# |! [, N; f1 E! a% \ when <constant_list> then/ P5 l/ F* C) ?8 q
<statement sequence2>;% {9 y+ V) m' h# l4 r3 P
...
( I7 B7 ?2 m$ r; }* m else
" d; y, d7 c) V2 o2 P7 e <statement sequence3>;: s1 P, {# x; @: M& a( c
end;: \/ J. L! x- ~7 y
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2循环语句
7 x2 M Y/ u: O- Z( t (1) from <statement sequence1>
' t' i' ~6 P5 a( X3 g* R( n until <condition> loop
/ a/ F, V. W. J7 a1 O <statement sequence2>;( @1 @: y3 ^+ s: Z
end;
' k& W2 y4 z2 V0 |* v9 l (2) while <condition> loop
* V; R! o6 A7 F& m: d+ Q7 } <statement sequence1>;% u& O' F4 s( m, {. c. E4 J
end;% U9 A1 F, S- d4 { q, y7 Q
(3) repeat 7 b1 f- i- g! M& _
<statement sequence1>;
. y$ n$ q# Q# Z* A' A- K until <condition>;4 B7 C0 y* ?" c' ]& T# X
(4) for <condition> to <condition> loop, [2 S' C; L9 O
<statement sequence1>;
4 z9 b* g+ W/ L2 |9 W1 _ next;6 }+ G4 D3 j! q
3中断语句: Z: u- ] { x# Z5 m9 G
waituntil <condition> prio <integer expression>; i) O6 R6 b3 s1 |/ V4 Q
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以上为常用的函数！5 T$ P% t' ^& D% x4 a* B1 H
还有很多，如有需要我把资料发到你邮箱里
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