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发表于 2012-11-13 08:48:12
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1判断语句
- |. K0 S' s& {% [: A% `. q1 b if <condition> then
* N" d+ N8 V7 x R <statement sequence1>;: t1 |* o* @1 L0 i0 C7 T# K
elseif <condition> then
! ^' d/ }7 U9 G: p) c) J' B0 X <statement sequence2>;' a- v* E: t6 t# c b3 I9 J" ` u) e
else / p+ }) I- `' g" i; x) s% k
<statement sequence3>;
/ ?. o2 e' W0 O* h3 S end;
E" z$ S( p2 w0 P如果分支比较多，用：
. f- @. n8 a" U6 m inspect <expression>8 O J! w- l# `- w$ u% ]: R% Q3 ~
when <constant_list> then3 v# B8 A/ k: d) C
<statement sequence1>;* E! g8 B2 s7 o
when <constant_list> then
* A W- m4 ]/ n+ X <statement sequence2>;
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else/ g0 I! [. P) N
<statement sequence3>;
. [ e$ g" g: g$ yend;; e9 Q+ t+ m8 U! K6 Y) @0 L3 J6 c
3 e0 a# \' z; a1 P- N2循环语句, h, v% O7 h/ s x8 t' s
(1) from <statement sequence1>" `! Z: r4 j( V- v8 h/ I% w% V* L
until <condition> loop. j8 e Z4 o4 I F! |
<statement sequence2>;
: t$ N' \* A5 F9 _) I5 H end;5 H0 V+ j" L+ T* E4 s% p- q0 R
(2) while <condition> loop
5 T/ B& C0 Q5 C2 C6 k& E <statement sequence1>; v m) \ G) _0 P7 [
end;) \/ d- t- N) S7 T
(3) repeat 2 v- H( r) e- {* k
<statement sequence1>;
9 {! x9 q, S4 o4 W0 R2 a$ N until <condition>;
& o2 h" C, b6 d% p/ ?6 A, a8 K (4) for <condition> to <condition> loop: l7 S8 Y, W1 R! o2 n/ p) S
<statement sequence1>;( ^- j2 l$ u7 L
next;' m$ o l* R+ U
3中断语句
! i" n3 o# ]- r2 e, |) j6 ?" P waituntil <condition> prio <integer expression>;
I2 V+ i/ L6 `: Z
$ Q8 a' H8 r3 _5 ]4 | g$ n' K5 E
9 v# ~& |' E* O( H% F以上为常用的函数！& J* o6 o" m. K! i" u
还有很多，如有需要我把资料发到你邮箱里
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