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发表于 2012-11-13 08:48:12
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1判断语句
4 I* L7 S3 ~$ h if <condition> then
; ]2 i4 j; v+ E9 m2 c! C <statement sequence1>;
+ R$ p# m5 U- \. c elseif <condition> then+ m2 v3 h7 ` G- i
<statement sequence2>;
5 c" Z# D4 I9 a; u" P else + l0 i: V9 o. F/ \5 q# Z g1 P1 F
<statement sequence3>;
' Z9 v# }& T; ] end;2 v8 G" ?% Z( m% q8 u$ J: l
如果分支比较多，用：! l6 k* }2 Z/ c8 p. E9 V+ E
inspect <expression>
B/ U6 I% e, R& r) w when <constant_list> then
8 p1 _2 K7 K3 m( W& D7 h. E6 t <statement sequence1>;. E- I5 K7 @( M' G$ n8 W
when <constant_list> then W f/ F8 u+ K G) K. Z: f5 f1 d
<statement sequence2>;
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else
|8 e; G. `% L$ O7 B/ @* v. s <statement sequence3>;" E: e2 r& p; b0 A- I
end;
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2循环语句
( r3 c: t& Q! k (1) from <statement sequence1>
$ f, l' Z; H7 J9 u( H0 Z) B until <condition> loop) J: h# ^1 m& s4 U0 M0 V
<statement sequence2>;( q3 }' U+ O8 X- \& x O
end;
8 d, D4 A2 I" o6 N/ l (2) while <condition> loop, f5 m5 j5 c6 r$ N; Q
<statement sequence1>;% m, V$ {# S1 T2 w! ^
end;% T% L. a; L) @% M4 e# u
(3) repeat
1 D! N! X" s( D+ F) G% { <statement sequence1>;
7 N% A: E7 q" ^* K% S2 p until <condition>;
5 ^/ y1 ~" F4 n; o4 ~ (4) for <condition> to <condition> loop
" t* H0 A& Q9 @: W9 H9 L$ H1 m <statement sequence1>;! M6 U1 R' a: b
next;
/ u v) I8 c6 v/ e3中断语句
9 p. u% y- v$ f- y6 l( B7 \ ? waituntil <condition> prio <integer expression>;. i" _# `$ ] W' b8 y! W% F
7 P% K; K+ I3 F) c
3 v A( [6 E. k+ J" O" o. X以上为常用的函数！
" N% v) }0 D& r9 T! }还有很多，如有需要我把资料发到你邮箱里 5 Q! v8 D" W; F5 ^
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