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发表于 2012-11-13 08:48:12
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1判断语句
8 k+ [' ?- X# k/ e. E' G+ e4 | if <condition> then8 B$ r n8 `, C" l! b* {
<statement sequence1>;1 t3 a, L% q/ B6 t5 M2 g
elseif <condition> then
5 {; E W. I1 E! e' h <statement sequence2>;- w& K" _' d& ]' u
else
( h. o$ {0 Y. ?; t. ? <statement sequence3>;
9 \# f& H4 I2 w" @" O. `6 N end;
& F4 L7 A( x! [1 p如果分支比较多，用：
, b! u1 H/ a! D4 d$ [( m inspect <expression>
y+ t* ~ j6 j when <constant_list> then. q+ x) G4 P( o2 k5 C# V
<statement sequence1>;9 O; @0 X. X5 u% P- a
when <constant_list> then
" _$ \( S/ [# b1 n1 O( C <statement sequence2>;5 }! N: f) f8 O$ g) H$ s" l3 Y
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else3 M* |* c0 O6 |6 c0 ]
<statement sequence3>;
" r- j# A) T' t1 gend;) d0 [% e% i( V3 l% `
2 A, m, c# Y; k$ n: A7 |6 g6 P
2循环语句% @) M; s4 e4 A1 b8 m9 m$ ?
(1) from <statement sequence1>, k( Z) r% z1 M) k6 D* z; H2 o" q
until <condition> loop
1 O# M7 Q* c7 f1 f <statement sequence2>;
0 J9 a; {7 D, c5 |* b end;* Q4 F* G: U$ L$ ^2 d
(2) while <condition> loop
) N2 a' `4 A0 E0 s r( i* [ <statement sequence1>;8 x; [+ Z4 M( \2 x
end;" U1 y- E6 d4 V
(3) repeat % ?6 M& U4 U; j$ Y" y% W
<statement sequence1>;
9 O2 b6 r+ C9 C until <condition>;
, Z3 R0 w7 a, d; g (4) for <condition> to <condition> loop
. `+ m- [( I* w6 _ <statement sequence1>;8 {0 O1 I ?! j V1 p. F, K
next;
4 M" k& M$ |9 h: J) t3中断语句
2 A5 h$ j; E$ k: M0 f+ L$ t waituntil <condition> prio <integer expression>;& H4 j) k" M. G. W
* u$ b5 i4 q9 ~% [$ {$ p
: s6 U; N% h5 j1 a& T以上为常用的函数！
! e9 M9 H. `" K3 x5 w) n还有很多，如有需要我把资料发到你邮箱里 5 W0 Q3 _% c6 o/ r; G" r
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c6 |$ m0 k. R3 T. Z
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