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发表于 2012-11-13 08:48:12
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1判断语句7 F% O" O- U4 @3 @" y8 ^6 I: W
if <condition> then: o7 d e1 U9 t9 c0 E
<statement sequence1>;
* I: }. }" J( h7 A/ S& x5 d elseif <condition> then
# u7 ^) A& R, K' ?" V% G q, ^ <statement sequence2>;: b; x3 c/ E& W1 _& Z
else
8 H9 ~. A/ D8 X <statement sequence3>;
$ q' b! P2 A" i9 {+ H end;" p0 y" F+ l% T, o; O
如果分支比较多，用：
6 z. b# t3 {: o8 m" D inspect <expression>
5 l. P5 p: D; _* W when <constant_list> then, W7 j; o# S! \' w
<statement sequence1>;
& k2 ]; X7 z* r when <constant_list> then
4 K+ i9 H5 q- \% i a0 k% ^3 ` <statement sequence2>;6 p S& y: M1 Y R
...
+ O! k$ F# I$ S- L1 J1 | else
# ^7 m% w6 J5 T q! Y P <statement sequence3>;
, A( U! K8 x! O7 aend;" L& E: `# w, g( r2 [4 J8 w
, V( Z5 t8 D$ a* a2循环语句3 a, _+ f! a* W" u
(1) from <statement sequence1>
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<statement sequence2>;/ u5 w% k. X$ v! g. `2 b/ d
end;6 n) ~* ]9 R& { x I5 c3 x
(2) while <condition> loop8 D9 S1 n' T2 v0 w; @
<statement sequence1>;
6 K) j5 \# K( f, G4 m9 O end;
/ |( Q, G! l: `' E( E. L, } (3) repeat
" U s: r7 i! a, e. ]" ~ <statement sequence1>;6 O! R/ U$ D/ h/ m& @& b2 P
until <condition>;2 E1 V" M" p; b4 @
(4) for <condition> to <condition> loop8 A; D4 y. H3 n# K: \2 n
<statement sequence1>;/ @% |( w9 c0 ]9 N1 [0 _% n! |% ?1 S
next;" K# Q- ~: W7 f# l$ o' ]% A
3中断语句0 O* d+ F4 w6 _) {3 N
waituntil <condition> prio <integer expression>;
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以上为常用的函数！
5 X# v% d& o) C& K3 s还有很多，如有需要我把资料发到你邮箱里 0 f; t1 T3 F+ A, f- \7 {: w' C
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