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发表于 2012-11-13 08:48:12
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1判断语句
3 E2 @+ a* |% ^' |- _ if <condition> then! M; m4 T7 h8 D8 Z2 r, s* w
<statement sequence1>;
2 t. G* j) J4 d/ ^ elseif <condition> then( V/ Y! T/ m2 ]1 t: ]( u0 ]
<statement sequence2>;+ H6 i) j/ Y+ Z) c# I# C
else 4 Y5 I: n& s( R. V- M5 h; R
<statement sequence3>;8 g2 N3 e8 m4 S4 K
end;( C# B5 z' T) d
如果分支比较多，用：
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* M" q: y+ J( } when <constant_list> then
: n4 @7 W( _6 _& {4 ` <statement sequence1>;
) g* D% k) n( m o; L/ o when <constant_list> then
2 T6 [; T" r7 K/ D' r <statement sequence2>;% X3 h- M' r( d4 O% d/ ~9 ]2 h
...
. Q, d2 Z8 @( [% \: l1 x: x& n else
% M( f- {; n# [; O <statement sequence3>;6 H$ _" m" I5 _2 v
end;
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1 H# J$ q" v5 r, Z6 {0 H' z2循环语句
) y: K7 d" ^, S6 X6 F7 L+ ^. h (1) from <statement sequence1>
/ B0 u$ _& c! y5 \7 A5 P, I0 A until <condition> loop
. Q6 n9 D4 i# f( s( t <statement sequence2>;
! @# r8 @$ @6 @ end;% Q3 M, |3 n5 m0 I- h% @5 ^; b
(2) while <condition> loop5 l& @/ O5 D' `8 Y! m
<statement sequence1>;
$ _! Y2 J1 d, |' C end;
. H4 g$ R3 n. z9 V2 {; f8 } (3) repeat ) F( i3 p( ]5 c. o( V4 K
<statement sequence1>;
1 I( j1 q, n% K+ u! b until <condition>;
5 ?; f( O# u- s% ~( o7 d. Z (4) for <condition> to <condition> loop. R6 J1 F% Q0 B3 L. E
<statement sequence1>; a: P. B! p0 ~; x
next;
`0 r% C" J2 H, C- v3中断语句& q) G- h- D _& u/ E |9 }
waituntil <condition> prio <integer expression>;
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0 ?6 v3 R0 R- [' s4 @( \
7 h% F; d8 ~) ]) U G以上为常用的函数！# D A" p7 v5 A& W! z8 k
还有很多，如有需要我把资料发到你邮箱里
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