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发表于 2012-11-13 08:48:12
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显示全部楼层
1判断语句
$ @; E& W3 J5 W5 J% P$ L if <condition> then' D+ H) ~4 c! e
<statement sequence1>;
}: s6 J$ L+ K elseif <condition> then
) p# r- E& ?, B! t0 L2 w2 _& I <statement sequence2>;
6 v/ v$ D7 A# e4 V5 e( O else 8 W. m$ }. P1 x
<statement sequence3>;
7 |# p1 p. O, {9 }# }; [5 x1 t- s5 a end;$ A) S$ X8 _0 V% }0 p/ i8 r- j
如果分支比较多，用：
5 R( g, G! G. ?8 y O inspect <expression>
% w! a' s; h3 n- j3 j when <constant_list> then
) L5 a# _# x; l- w$ X <statement sequence1>;
5 R1 B0 c" d/ W+ m when <constant_list> then5 a" D/ x* N q. C
<statement sequence2>;
+ y" m( F9 }) }+ R ...2 n8 {8 m2 t6 }1 l( }9 v
else. Y6 ~: J4 f. b
<statement sequence3>;, L$ N0 @% u6 n+ v; w
end;9 h' R" }& r$ _' M0 I! k
; r4 J! v' B1 Q u8 O/ T2循环语句8 B! C9 ?, I9 Z5 X- O' G
(1) from <statement sequence1>
/ {& U! L7 M4 y; I! B; e) G until <condition> loop
% g& {1 I8 E9 \2 x, R <statement sequence2>;" g4 U7 b% n+ x& W
end;* g3 g8 b2 T$ F- }+ e
(2) while <condition> loop
* Y! r+ u* {: I8 n' U L* \6 S <statement sequence1>;+ U" t* z: N- I6 O) g
end;4 g# |& l* c ]% W5 W5 l& [2 c( y
(3) repeat # y1 s5 p# o0 q$ T- z
<statement sequence1>;- U& P- T! A0 b4 H" L
until <condition>;2 k/ {7 ^7 `4 i0 J4 T {4 M: \7 ?6 p
(4) for <condition> to <condition> loop( ^; c {9 |( g2 ?4 j& }( r
<statement sequence1>;* D# E% [0 f% D7 A- S" c3 w7 T
next;: u' p4 i- s) s4 g* ] f _2 L1 E
3中断语句
+ ]. a( D* J1 j& a X2 d8 Y8 x waituntil <condition> prio <integer expression>;
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以上为常用的函数！
+ q9 n& F* Y! h还有很多，如有需要我把资料发到你邮箱里 2 l/ s- g" y' Z# p6 ?2 h0 n
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