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发表于 2012-11-13 08:48:12
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1判断语句. N) r) S! V& v2 O% ~
if <condition> then
' q: m6 h: K5 V* o+ d" U <statement sequence1>;" A9 ]# m# x1 N; L6 X9 J+ h: t
elseif <condition> then1 Y& k1 g; M" P: \6 m; v7 L( e
<statement sequence2>;
$ ^( N9 C# Q! ^1 a. N- h* C& f else 6 l! L* G3 s" N1 D$ S
<statement sequence3>;- A5 f' }9 Z% T* X* _
end;
* K: Z! T |0 a/ o/ L如果分支比较多，用：
7 z0 A% v! L3 t; h6 A; l inspect <expression>: Y4 z1 s) G, d1 u1 `. b' R
when <constant_list> then
`2 }, T, Z9 N' t <statement sequence1>;
9 o- d' Z2 w' A when <constant_list> then
: Z1 I( V' Z* w" k: y2 b <statement sequence2>;% i$ k* Q" S, Q: e" K5 Z3 R4 f. M7 h; K
...
4 {' ?+ k3 M- ^0 l v% }8 l else
( ?5 a( t- P. W t; Y. _6 c5 s- U8 ? <statement sequence3>;
! B1 z9 F1 _) Cend;( Z2 T: h u2 I- R
: X$ w: }) Z, I0 j# C) K* z5 f0 c2循环语句$ _7 l% |2 f6 t# u( K, g
(1) from <statement sequence1>
& d/ ?& E$ i6 o& S8 N2 f until <condition> loop [& @8 w$ `) s. r9 f9 P
<statement sequence2>;" d0 s5 H8 w5 L4 C* @* a. V
end;$ E1 i; }' ?1 h+ I
(2) while <condition> loop4 J6 k* C# F; {+ y4 m) a. C) z
<statement sequence1>;. O) K$ x3 F3 `. a0 q$ j) [
end;
Y* I( M6 B' A' ~0 @" T; j (3) repeat
) @9 F' y) I! E% T <statement sequence1>;
! h& L' ~. F, @7 i5 M until <condition>;7 J! F( _* w' B/ W2 `
(4) for <condition> to <condition> loop
7 n0 k, I2 ?) M i3 s <statement sequence1>;% w+ m& {+ e6 ~$ X0 E0 w
next;" Z3 f" y, W* A& U
3中断语句# X8 V! ]2 y6 _4 K) [. C7 a
waituntil <condition> prio <integer expression>;
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" @3 D7 @6 U. W# A- `6 }& O以上为常用的函数！
6 Y" [; a4 C* t9 w) G; ]) `6 |' S还有很多，如有需要我把资料发到你邮箱里 1 B, B6 s( i5 Q) C! a' e- z0 r
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