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发表于 2012-11-13 08:48:12
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1判断语句1 `1 \ }. z- D( Z7 Y4 J
if <condition> then/ l, l; u! k2 N! u3 `" n7 ]) H9 y
<statement sequence1>;
. ` E0 f- ?/ G) m; Y8 e elseif <condition> then
% d5 W9 k6 X) v m% r& D$ Z <statement sequence2>;
! b0 M" m/ Q4 ~% {- S+ e. ? else
1 O+ N" X( A0 o! n: m/ C <statement sequence3>;& g! X! q' _ {) p2 q/ U. F
end;# @3 W: u0 j$ B C
如果分支比较多，用：
$ D* \3 y/ N* x inspect <expression>) q* y8 A) {6 z
when <constant_list> then# O+ a ?# e2 K1 L9 {, D3 q2 y
<statement sequence1>;
" j+ F+ L/ [$ y4 p when <constant_list> then+ x% H$ A( ~7 A! m1 m+ A2 n
<statement sequence2>;: W6 Q; n7 b9 @- M% d$ b
...# R# }( b* @; q9 m
else! k) s' z; E0 w3 H
<statement sequence3>;; p( q& U' }9 E) ?. e9 E2 Q( y: m
end;
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- C: |9 v k, d$ B+ }) Q2循环语句& M& Y2 j- B; L M1 J
(1) from <statement sequence1>
* L4 S8 D! t! I until <condition> loop, O. R0 B9 a- z) w y
<statement sequence2>;
# y7 I6 W; u9 i, w end;! D/ u; r, v' J4 B2 ~
(2) while <condition> loop* @4 d g) R' m0 @! ^% N
<statement sequence1>;/ T9 r, S3 t) B+ W
end;
+ a5 M. ?+ z6 M7 i- T# o1 m4 W0 I (3) repeat + V/ Q( o* D' _+ y
<statement sequence1>;6 F1 S- @$ K0 k4 B
until <condition>;* y E) ^ x: J1 x- J
(4) for <condition> to <condition> loop: q7 c8 j0 z8 l& e
<statement sequence1>;) M7 k, ?! i7 X2 T1 Q
next;
) m" ?$ Z5 ]: C* j8 }, _5 q. v6 X3中断语句% Z, c' F. Q/ c9 L7 y
waituntil <condition> prio <integer expression>;- g2 w% h4 n) `% y3 s6 e# b- |; Q
6 Q7 \& x4 U3 f3 Z6 b0 p
9 k# i, `5 ^1 P# n+ a+ ?2 E, ~6 o0 U: P以上为常用的函数！* k: O% B2 N# h/ I$ x5 a9 s8 _4 B
还有很多，如有需要我把资料发到你邮箱里 q& S0 `/ S( r( g' q$ ]9 i; x
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