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发表于 2012-11-13 08:48:12
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1判断语句
9 L; I1 z a0 T9 j; X' U3 ^& A I if <condition> then
( a+ Q# [! `. ^) c$ H0 ~ <statement sequence1>;
3 [9 ]# D C6 F8 h1 u3 h9 l elseif <condition> then- E' i/ ?) p- g( \. h# r7 E! [
<statement sequence2>;2 {: A# e6 h* X% e
else 7 S. C. p! k) s# f9 \ X
<statement sequence3>;
) H: M; |6 `8 p, @4 ~* b4 N end;
% ]/ w9 P/ n5 P% l8 R如果分支比较多，用：
: q, c$ o4 w/ ] inspect <expression>
! t" V6 }3 u+ G5 z1 [2 ` when <constant_list> then
; i, e4 n0 @2 c9 A5 b g <statement sequence1>;
; M8 |* F+ \, [ when <constant_list> then
% L3 L. U' S3 W7 A$ u- j( O <statement sequence2>;' r( @% S8 H2 x' I$ n# X6 s7 K
...
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<statement sequence3>;& B9 n# w5 K0 @! X
end;
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2循环语句- d/ E$ D7 v8 I8 _% r
(1) from <statement sequence1>& d4 {' M7 A; B! Q
until <condition> loop
, u& W, p* s# [ <statement sequence2>;
. Z/ T# n% q* r/ l) P0 g# n! N end;
( v# l/ V+ d$ f2 K (2) while <condition> loop
2 h' n5 Z# G& _ <statement sequence1>;9 s9 T$ X2 b. m, b
end;* \+ |1 W/ z- N/ ~( z
(3) repeat 2 R6 Z' D% z$ e/ @6 t% d4 _3 c
<statement sequence1>;
2 H# ?- [7 {0 g+ W2 g2 d/ _ until <condition>;
( b- M3 F$ T% I! x (4) for <condition> to <condition> loop7 u& Q5 N6 w* M+ k" Z! T" j ~9 l
<statement sequence1>;
# M# E% q- T6 B9 x1 _; Q next;
$ r4 B# c% T8 V; h5 }3中断语句
, R/ a6 I7 K" u' i" c waituntil <condition> prio <integer expression>;" W* h' s# {; M. {5 O5 l3 ?
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以上为常用的函数！
9 r# ]0 J& u# M+ z$ w还有很多，如有需要我把资料发到你邮箱里 9 `- O6 I& E5 C ?3 L
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