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发表于 2012-11-13 08:48:12
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1判断语句7 C1 O. |8 m% w3 v0 k5 r$ L
if <condition> then K$ q: T. a! _+ \7 `: g6 d. t, n
<statement sequence1>;
5 P" _! n3 l) I' R. d elseif <condition> then5 N/ o; W. D( f3 c3 O) ^- u
<statement sequence2>;0 x# D# ]4 F8 w2 ?. l, D
else 1 _" ` k$ {& g$ u+ [6 ]3 Y
<statement sequence3>;2 o6 a, j- j b3 j+ f9 \0 K& i
end;
4 V. D5 j: @( Y" t6 f5 k. ^如果分支比较多，用：
4 F7 w, U% }$ G9 Q: N$ N0 J inspect <expression>
+ ^+ @9 i$ @: Y9 F( P* O when <constant_list> then
g0 u+ U$ E9 S; |$ C <statement sequence1>;; u7 t! s: Q- c8 b' U3 }" B( K
when <constant_list> then+ z. b/ R- b4 Q
<statement sequence2>;3 s6 U- K$ y. ^+ F+ f; p
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else6 D E6 Y8 u z1 \$ ~% X* a6 C' X
<statement sequence3>;. R2 J' o. ^, Z; G. Q# T4 W( _- e" i
end;
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2循环语句
: M4 n9 N8 L" Y X8 U$ D (1) from <statement sequence1>, C. w* d, |" |/ u# P9 \
until <condition> loop
- W0 l" n# r: ^0 p; U4 | <statement sequence2>;
0 k) q, L5 S; o% |& R1 O! _) k4 h( m end;
' o& p5 M& T- P: M# j9 Q (2) while <condition> loop
; p, {" z% g4 r1 i <statement sequence1>;. Y# Y ?/ I# T7 P5 q2 g' R
end;9 j8 F B2 l# D( N6 i* d5 K
(3) repeat ! l \* _' i4 B6 b
<statement sequence1>;
: v; V/ K4 B w- O! D" y until <condition>;
% g4 F) H) i( @8 {) F0 z% V1 j6 d (4) for <condition> to <condition> loop* V& l5 R, J& v- W) J7 h/ c& T
<statement sequence1>;
' i" f7 s3 H. u @ next;
2 Q+ J1 f) j, V* [5 V% g3中断语句
1 j# ~, {$ `( m5 `3 B% @- i( W waituntil <condition> prio <integer expression>;
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以上为常用的函数！
, k0 v! _# j' Q' h0 m$ z还有很多，如有需要我把资料发到你邮箱里 . {$ \' R4 x( S9 v1 y- I
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