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发表于 2012-11-13 08:48:12
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1判断语句
: ^& D2 b; q6 X if <condition> then
( f9 d2 h1 `/ B& G8 T, Y- F9 U$ B6 D <statement sequence1>;
_; \7 {+ Z% e: I# U elseif <condition> then
. U7 P- y5 S, M. V' L <statement sequence2>;
$ J% N! Y2 O+ J% y& s else
. Z X( b& g" B1 `7 J- g <statement sequence3>;
# r+ e5 T W' q; p1 q end;2 l) W o8 f! ~
如果分支比较多，用：
0 `" b. ^5 K( D. t I5 w inspect <expression>
8 w/ }$ F! t2 [6 O( `' F& @& e when <constant_list> then
/ v8 l9 F% N' r/ s- z: L <statement sequence1>;, z8 c$ B+ K* C
when <constant_list> then
# m; n: |1 }1 h <statement sequence2>;# N1 A/ y# w8 O# ~% F
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else
) X% q# I0 T# z <statement sequence3>;
& v) i+ V# }) R$ X7 lend;
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* v/ p) R4 f& E7 y/ |2循环语句
3 L1 U5 F) |- r1 y/ d6 k: S1 U (1) from <statement sequence1>
1 R6 I# s( X7 r$ K2 v until <condition> loop9 o9 w! v. X" ?/ H9 M" s0 C
<statement sequence2>;8 G9 b) o0 q2 p* ]
end;
. e9 {2 k" r9 o) I' H% i (2) while <condition> loop
# e8 l+ [6 j! v7 b# p <statement sequence1>;% {9 i3 U8 G, n! \+ C% J) n
end;
- ^3 u( {# m l r/ S- {3 F (3) repeat
) U( Z+ w; `" [8 j <statement sequence1>;& m0 C5 S; x6 G! N" n
until <condition>;1 c; N4 H1 Y, j+ @
(4) for <condition> to <condition> loop
6 q' e" r8 Z$ r8 q7 l <statement sequence1>;2 v# R0 d' m, F9 v, S) E4 I
next;
5 m9 k/ {- q5 o& h6 c3中断语句+ _9 q# [4 N( r% O9 i
waituntil <condition> prio <integer expression>;$ j; B& ~4 F$ U
) }" N2 w z, ?9 r7 s" l# W" \& ^
2 G' S% Q0 [1 D以上为常用的函数！
- ^' y8 g0 R! _+ u- r6 y2 w- S还有很多，如有需要我把资料发到你邮箱里 6 G& h5 ]* N* `2 L9 o- x2 |
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