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发表于 2012-11-13 08:48:12
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1判断语句/ t; A7 v5 {# K8 ?2 y1 r J
if <condition> then- {2 z5 ] A9 o0 n: J
<statement sequence1>;
2 a% q% d! s& d8 p/ O0 v9 E elseif <condition> then# J+ K$ W6 i" E& ?4 O: G
<statement sequence2>;* ]6 N( g% a/ s& v S: h
else 4 }% \% k7 W% q; A: \
<statement sequence3>;* E! \" y2 A2 b- f6 O ]. s
end;
7 ?! K% R; ?) n0 K1 Q. j1 j如果分支比较多，用：
4 k; O1 }$ p: `# e# O8 o2 @) s5 N inspect <expression>$ |' H8 B0 G) R1 H
when <constant_list> then8 j4 O% h. f5 z( q' p
<statement sequence1>;
( I& _. z; f7 n4 S9 ~' A0 g3 Y, C& z when <constant_list> then
- g7 z7 v& T9 R. t+ t( F) Q9 r <statement sequence2>;
" A0 s; s9 |: h' h7 r) t ...
, ?$ k4 d1 P/ V! D$ w* u6 M else
. w$ y0 i7 ^' ]4 `0 U( [- w <statement sequence3>;( b2 l8 a6 T3 C+ _' O2 T# z# S
end;* C0 A9 }) H( \* B+ ^+ t7 [
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2循环语句$ u0 }& h; t( {# f: Z- L
(1) from <statement sequence1>1 A k7 N E! e5 I* C5 Z, D
until <condition> loop
5 |5 x! e; p! A& D8 l/ h6 g <statement sequence2>;3 Y# j% e" {; ?" {# _
end;
2 f- x# ~0 Y8 g4 Z (2) while <condition> loop2 r+ M7 y, Y$ z0 _6 _4 j: m* g
<statement sequence1>;
/ U7 P4 f) R! N$ ` o end;
, M8 h/ ~) K5 E6 r3 u. g5 {2 K, Y# m% H (3) repeat
9 O( j) X" M! k. P8 {2 ~! N <statement sequence1>;
' `, n' N$ _. G0 `( \1 }4 u* G until <condition>;
- a5 K5 N2 u }: z (4) for <condition> to <condition> loop3 ]8 o7 {; K# W
<statement sequence1>;
+ J3 g) q4 B4 {/ J2 D7 B/ q5 e& B next;4 @6 b: ^3 D L) f# N8 ~4 l- C
3中断语句/ d4 V7 @ z- z
waituntil <condition> prio <integer expression>;
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C: e! K, u$ v
. H' U* F* |- C8 I Q: K g以上为常用的函数！
7 m2 a" C, k- r* i( Y1 f还有很多，如有需要我把资料发到你邮箱里 & @' o2 f, B1 s s6 M, a0 w
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