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发表于 2012-11-13 08:48:12
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1判断语句0 S. L/ u) m+ k: `
if <condition> then' C" K- ]4 b" x1 A
<statement sequence1>;
4 j; r0 a4 ?% r8 c0 ^* @ elseif <condition> then
' o5 N9 C9 P7 k8 O4 S4 e <statement sequence2>;
1 Z$ s: k' n) |& B/ m4 z6 z else
2 p0 Z) P: s( z+ G; I; M2 u( J <statement sequence3>;0 e$ o2 w! [! y8 `) {
end;9 L9 i* i5 H% D( e
如果分支比较多，用：
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3 K, n/ a1 v: W% z when <constant_list> then
* j# j8 ~. B# Q) ] <statement sequence1>;
) g1 g; e4 Z L! H when <constant_list> then9 Y7 _% i# ~, A) G3 k2 h* F
<statement sequence2>;$ I/ G3 X/ Y+ l
...
8 W1 F7 g9 y2 n. p6 V* f else
$ y. p( i( f) O4 @' c <statement sequence3>;
$ I- G9 X+ ]+ Mend;
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" Q6 E4 Q4 T0 q1 I, N- b7 B' y2循环语句
+ f) l5 z! B; ^- Y! Z (1) from <statement sequence1>
% S8 N2 S- {) ~ until <condition> loop5 \1 p/ s, R! g8 t$ ?# l/ W
<statement sequence2>;
# B" ^% r( _+ m end;: ?! N0 `$ d# K! V8 W9 ]- U& `
(2) while <condition> loop
7 n- g8 G7 n0 r" m. M <statement sequence1>;
% k* g M) g) _# [ |/ y: n+ U end;
( R" v/ A+ y- A( E- l (3) repeat 7 L9 n2 G4 E( l% r
<statement sequence1>;
2 n# s* B9 z6 J+ X# l until <condition>;5 b& C2 \- o" f0 R% n
(4) for <condition> to <condition> loop
; l9 D3 P) w* v& y9 s5 I <statement sequence1>;
: D% V. e- y+ g+ r, E" a6 D next;2 W% i: T+ G$ r. x7 f% q) H
3中断语句
3 ^" E8 S3 c5 L8 j waituntil <condition> prio <integer expression>;
" E8 |# p9 `) `, G: k' b( V, v; @7 i2 ^ E, X
; u9 n9 T' w0 o# i$ }' Y! l& h3 K以上为常用的函数！
% L7 N y% y8 J+ I( M$ K4 u- f还有很多，如有需要我把资料发到你邮箱里
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