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发表于 2012-11-13 08:48:12
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1判断语句7 z; W5 w" l9 V9 V: [
if <condition> then/ }0 p9 A2 N$ i6 H7 g0 U6 ?% g
<statement sequence1>;/ N( q9 V( K T; r
elseif <condition> then
/ \- f2 D* G5 U <statement sequence2>;( k! v4 S1 S: b( S
else
9 i3 c8 P% e& n+ O$ ^) E" { <statement sequence3>;
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如果分支比较多，用：, l" `+ o0 o* f! k3 e6 a
inspect <expression>
+ ]7 r* Y1 u3 E' F+ a when <constant_list> then
% O. A4 m$ ]& H: K# ? <statement sequence1>;
" j4 R- r- O* _) y' Y' \# D# e3 s! C. r when <constant_list> then6 U3 o9 Y- s% ^: m# W* f r6 ?
<statement sequence2>;
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else. b# k8 D% ?/ h* L( k
<statement sequence3>;' r" h, k+ r# ]7 E& b, `
end;; p. B3 k0 @8 Q5 r9 r
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2循环语句
% c4 [# S, F+ h+ j8 ^, _ (1) from <statement sequence1>0 K# a' Y7 m% s- Y' i# H1 n5 e- S1 c E
until <condition> loop ?3 D) _* R& A
<statement sequence2>;
2 P) \: K; ^" o0 @# F end;
\8 U- W0 b! Y (2) while <condition> loop
2 u5 c) ~& S+ X' t <statement sequence1>;
& _+ o: X% x3 z. q& d& H& ]& H end;( m5 W; _6 m7 C# P
(3) repeat
4 y8 u( B4 l( E: D <statement sequence1>;
" l1 N* ` w0 V2 i6 d- A7 j& D7 J until <condition>;
8 f& K9 t, J, {% [ (4) for <condition> to <condition> loop- C! @" D# |) U1 j5 R0 \' ^
<statement sequence1>;
% Z. i& H' n" l* q next;& C0 L8 P" R O* x" E/ {
3中断语句* l* o% p& t; C. d h6 b& C; L/ J
waituntil <condition> prio <integer expression>;5 d v: ~3 ^9 `4 V- O# s
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以上为常用的函数！9 t% }- r4 {; H. R& U. o( m5 ^/ k. ~/ E
还有很多，如有需要我把资料发到你邮箱里
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