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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
" h- R( }5 M" s5 n$ o0 } if <condition> then' O4 Z/ X7 E6 p- {! _7 t/ L
<statement sequence1>;
) b$ a/ g) Q# R. o4 g elseif <condition> then
7 z/ F" A, D. k# L# c3 } [ <statement sequence2>;# o) i4 }* G9 O
else * [1 ^/ P& i* N' D& Z) R) [
<statement sequence3>;
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如果分支比较多，用：
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when <constant_list> then c, _6 s2 V* `. B
<statement sequence1>;3 M) v0 B* M" {) d3 g) ^1 Q# |
when <constant_list> then
2 A" D q3 a$ Y! U0 v% O$ t <statement sequence2>;; B* V3 a$ |! W5 k$ B0 A( K+ E
...8 w2 @6 x1 v( [
else% @% v1 H" d+ g- ~0 j
<statement sequence3>;' U+ D' G1 h. h
end;
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2循环语句
9 ?% E7 W- j' u$ t# A6 x (1) from <statement sequence1>+ P d3 D, f# w$ i. P; f; J; n
until <condition> loop
7 R# L4 J0 h- }. e( o) B) b <statement sequence2>;
/ P3 U2 a! w& w7 U: r end;
8 e% S& V$ Y( ?) Z0 \. a2 J (2) while <condition> loop
4 \; ]2 y( A! p6 k7 j4 D <statement sequence1>;) Z; [# N2 ~+ e- d4 m/ O7 L/ Z; W* t
end;2 j, j( l `+ ?( t0 g4 @4 R3 ], o+ k) y1 |
(3) repeat ) x, m7 c/ j7 \1 s P' a: H
<statement sequence1>;
3 t" A' W* Q2 N" X) ?9 w until <condition>;) f% \: ^9 U, O
(4) for <condition> to <condition> loop
! E3 [) S- Q' ~: ?7 F <statement sequence1>;" U# j. J/ l3 ^; H
next;
8 V/ @) y8 w" X y( y2 }! h4 ~3中断语句
/ f3 b* ~ H) O* v" x, u; Q" V waituntil <condition> prio <integer expression>; V& C' N: i4 K" E) r
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以上为常用的函数！
3 a* A2 [9 a( n* Z% Z- D u8 i- y' Q: I! N还有很多，如有需要我把资料发到你邮箱里
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