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发表于 2012-11-13 08:48:12
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1判断语句: r1 G2 H% ?4 q! p( q. U# j
if <condition> then3 I% ^% C2 |& v. A5 L- p: ~: Y
<statement sequence1>;
) g$ [' ]! ~9 h4 L7 d% `$ a( B. M elseif <condition> then
' H* M; G9 V& n <statement sequence2>;/ ^5 S" z; N) P7 s% K0 q
else
( ~1 J1 A# f, m; |' i <statement sequence3>;9 q( W" y. J+ ^% p, Y
end;$ Q. n2 D" @+ k, f4 c; n
如果分支比较多，用：# x2 T, q$ W2 b+ G( U! r5 i
inspect <expression>, h* F( U. O- \) [6 A
when <constant_list> then
( b2 x4 {6 J/ D4 x/ C3 V <statement sequence1>;
& Q6 F4 s+ g8 I8 B4 z0 ^8 i when <constant_list> then
0 c# U: Q6 d) }. O& j <statement sequence2>;+ r, }1 I6 h3 f0 j5 b
...
: W' m' N0 @6 C6 r: F* F0 Y else
$ }% U s, C. {) \; Q' i2 f' x' V) C <statement sequence3>;
Z& w# H0 B+ f3 [ h4 eend;
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2循环语句# \* G6 g& V5 h6 C
(1) from <statement sequence1>" e: `5 d3 u& M! M; M& L
until <condition> loop
" s3 @! l, G W7 j <statement sequence2>;
2 U! E; {. B& ]; [, B end;
% o. e" X( s" C# ^5 U8 f( @4 A% u- G (2) while <condition> loop3 L% ~3 t: X6 }0 J% H
<statement sequence1>;
+ i0 G* u2 O& A6 y1 h6 \7 D end;8 p9 O" A @. C$ R3 Z0 C" P% e
(3) repeat
6 e- Y, P6 J w; Y$ Y8 ^ <statement sequence1>;# [5 P' y! X1 a0 ^ w
until <condition>;
0 G5 |6 z& N: d/ T (4) for <condition> to <condition> loop0 t7 r2 U- c$ S9 [4 r
<statement sequence1>;
" I5 |/ X' t& o/ D3 o, V! K! N next;& M# E. H6 {! p
3中断语句3 j! E5 R8 ?2 A; f% S* G
waituntil <condition> prio <integer expression>;) I% o" D& h: a3 u2 w
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7 j- C ]+ Z* w$ x3 D9 X* `+ d: D以上为常用的函数！
, B6 E& s3 h+ @+ X还有很多，如有需要我把资料发到你邮箱里
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