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发表于 2012-11-13 08:48:12
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1判断语句: Y; Z* h" ]3 u) D+ g' e
if <condition> then
8 Q0 v! b( F( S" Z5 _* s1 b <statement sequence1>;& c- Q) A+ [' u7 X: K& ]5 G; g
elseif <condition> then, {' y9 e, k" r9 B& t6 |; Q
<statement sequence2>;1 R$ e+ `) C, y: [$ \9 U
else 7 C' e7 `, F9 y* D @& E! l
<statement sequence3>;
4 F# l$ y0 t" _1 _# y0 _ end;
, a6 m. B- m V+ g; U" x+ B如果分支比较多，用：
3 f3 D# i& N1 B1 _7 P# E6 N inspect <expression>
* V! N- r7 E: s r1 ? when <constant_list> then
B5 D9 k0 G2 x' @ <statement sequence1>;' ~7 T0 u) p0 {
when <constant_list> then7 U# y/ w7 e- O2 i" O; p8 [0 r
<statement sequence2>;
- n) E0 U& a) k7 d' i3 w$ U ...
# v0 P6 Y; x! O# _) p else
8 \" r9 ?* t2 G6 b1 O. x <statement sequence3>;
, a: c% ~# d/ J9 a1 p8 n; R. X" `end;. `8 _, R3 q1 V( X4 H+ ?
1 r% f5 p2 N/ b1 k, }8 K, T- x2循环语句# F+ Q- Q6 i5 `
(1) from <statement sequence1>
+ A; `" h8 n: I- q until <condition> loop
! \5 J4 b! H( j7 p <statement sequence2>;$ C7 V$ G4 t' o# T) ?
end;
3 r4 `% }6 G0 Q# {7 K' @ `! b! ~ (2) while <condition> loop7 q! [- D4 {/ D$ W+ c9 b7 F f1 u$ J
<statement sequence1>;
5 y5 q% `" Q" Y! b end;
: a: R/ S) l+ C2 B- x (3) repeat
! {1 L1 X+ U& X' B4 I4 g* l <statement sequence1>;; u! M2 A6 P4 O' S
until <condition>;8 p+ l1 e+ s1 c( P2 ~. N% Q
(4) for <condition> to <condition> loop7 ]& j# I& ^& m% V
<statement sequence1>;2 y- f0 a( s. K1 k2 x+ O( ~- P9 y
next;
8 D. a, l' e9 M% [; _( T U3中断语句
6 \# I6 g* P+ u$ P& t waituntil <condition> prio <integer expression>;8 B3 [7 Q0 v) Q- I. b/ G
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1 T2 [5 T1 |- w- K8 J以上为常用的函数！
9 N4 t0 r- t6 y$ D( L还有很多，如有需要我把资料发到你邮箱里 , B4 I, _1 a+ Y0 q8 C
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