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发表于 2012-11-13 08:48:12
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1判断语句
& z; u) y& U# u/ j if <condition> then0 A- @4 m7 j7 S# m, |
<statement sequence1>;
8 P% U. @' X! f2 M* M- E elseif <condition> then
3 H0 E% h4 J. C- `$ m6 k2 Z) y <statement sequence2>;: f$ p2 T; r" L6 F1 M
else ' l% [2 d6 R) v5 a& L/ }" A- K
<statement sequence3>;
9 s4 Q+ I% Y f6 e* u* r2 ] end;
7 d; ?2 t! m! \' `3 R5 e如果分支比较多，用：
. [7 F) S, I/ z3 s inspect <expression>
8 M, ~2 r. `2 D$ M when <constant_list> then% G* C5 x0 V+ G0 C# g) D& @7 n
<statement sequence1>;0 h. G3 M' ?& N# z! t
when <constant_list> then/ c4 K8 f6 k& v! f
<statement sequence2>;4 V; X& P7 |8 t. X
...( Q8 i5 e; N9 L5 J* e
else% @/ w% q& o# Y6 P- C; g
<statement sequence3>;8 h; ~" k: U2 h, j" R; f. k
end;
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3 ^& O# p! @( R, Y. ~. ~2循环语句
5 n6 i. f0 E2 ]/ X, P5 u (1) from <statement sequence1>
+ u+ p+ H# h6 F5 d until <condition> loop, s p. z5 L: p- h
<statement sequence2>;
( u6 f o; k" ~. l4 h% w; [ end;
2 d3 [% ?% C, t* C (2) while <condition> loop
& N# ]5 o, u: P5 ?0 }$ Y5 R T3 G <statement sequence1>;
- z& b' g$ R1 e% ], T* p, v2 m1 ~ end;5 W# q; ]* P3 e0 p3 v- e8 C# l
(3) repeat
" \' |9 a+ [; [ <statement sequence1>;- Y4 V- o8 K$ p2 @ }/ g+ n4 I
until <condition>;
: b" A9 J& Z2 Q/ R$ S (4) for <condition> to <condition> loop, q8 _5 M+ V% z0 W& M+ g5 J
<statement sequence1>;" _# ]/ U/ v( V
next;
7 _$ r' p: N5 _' i+ g( t3中断语句- l& L0 y( N1 P; V1 {
waituntil <condition> prio <integer expression>;
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& X% \+ @* R7 @: n以上为常用的函数！+ m2 o5 Y; P" U: k) Q* U3 D, W5 L6 Z2 L
还有很多，如有需要我把资料发到你邮箱里 & Q! p( D% b# G" G$ f1 {+ [( ]3 ?
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