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发表于 2012-11-13 08:48:12
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1判断语句6 A: G* a& z1 F8 k
if <condition> then0 O0 e; w) n9 D9 M; u2 Q3 X$ ~
<statement sequence1>;
" Q. |# [2 d$ ^" O' N elseif <condition> then' z3 p4 y9 D' Z( I
<statement sequence2>;
6 P5 s& d5 w3 q$ X. g" ?+ R' ^3 r else
/ ?; r; R. Y( d j1 U9 W <statement sequence3>;
* ?6 X. ^3 Z( B end;4 u' |( @/ q# e* b1 F8 J* y9 l
如果分支比较多，用：
' v0 R& y8 W) N9 y3 L1 C { inspect <expression>$ `$ M7 h+ m+ P. w- i" b' U
when <constant_list> then
+ \7 i6 n4 ?8 k3 ]3 A <statement sequence1>;
7 W. k" }- G6 P% o when <constant_list> then
0 r( S% |* e" v- |5 [! ` <statement sequence2>;
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else
5 e) q: T, b( e# J" G. P <statement sequence3>;- L' D: U2 K* T2 Y
end;. L8 e; H( p; P/ o# X; `: e8 M
7 R) X% i2 F8 G; c, w7 r) t2循环语句
4 I( i l& J) ^( s0 K (1) from <statement sequence1>& I) J. p$ |# n& _+ A# i! M
until <condition> loop
7 U" w ^8 T5 H1 ]$ M4 e& U+ @) T <statement sequence2>;
. \0 S- H I- \ end;8 H ?* W2 V# t
(2) while <condition> loop5 w2 m6 G8 Y5 A3 _0 |+ i
<statement sequence1>;# Q- F& u0 u0 X
end;
) ~4 j5 D: @8 I (3) repeat . [$ ]' _- R- v; W: E6 S% t
<statement sequence1>;
% `# o& K# n' E3 @' Y6 e6 R until <condition>;
H; ^9 F# Y) p4 ]7 X/ i7 [ (4) for <condition> to <condition> loop
: |' J9 E8 }9 q6 W <statement sequence1>;
$ @4 `: C$ g y next;
+ l( r" ?4 P' }7 m0 Y% k/ I3中断语句
( E& p. }/ u: n7 P waituntil <condition> prio <integer expression>;% k3 }+ ^% H D" U9 I/ m/ t E
7 @: e. H! X( ^* p3 f& \, G0 d& }& L X( T4 Z4 e9 N- ], j
以上为常用的函数！9 q2 K2 X/ A' E' F7 D7 x. g8 V/ y
还有很多，如有需要我把资料发到你邮箱里
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