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发表于 2012-11-13 08:48:12
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1判断语句: B" [' I3 z' W0 h& L
if <condition> then% @3 h& i- ^! f; p5 ~# t
<statement sequence1>;* H+ Q0 P' E# L8 j6 }$ q, x
elseif <condition> then
; `7 m! u- F e5 w- K7 j/ G <statement sequence2>;* @. o- {- T9 q8 [
else
( K4 ^5 N: a# d <statement sequence3>;5 o& P& R0 P- O7 S& n5 z: B
end;# s" _9 w: q( ~& e l4 b
如果分支比较多，用：
F. q+ L7 i9 R H* z inspect <expression>! Y7 V* J/ {$ O3 D' E$ u
when <constant_list> then
3 v; j/ ?& K+ J x, ` <statement sequence1>;2 H+ D( k) `) d1 {' p/ C4 [. X/ Q4 J
when <constant_list> then+ w$ H$ p8 z4 _! E/ ^
<statement sequence2>;
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else/ h7 v' J* t! w6 w
<statement sequence3>;5 ^* [ n: g' n6 x/ _. W( _& t
end;
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2循环语句& s& k+ N5 g) \$ M9 a
(1) from <statement sequence1>
1 K n Y2 |) w- W until <condition> loop
' c3 C2 s L3 G3 r2 Y <statement sequence2>;- Y" i" w! ?& @/ x9 p; }
end;- e. k8 l* x* O) X8 F3 z# z
(2) while <condition> loop4 ^! X2 }# E3 x/ {9 \, Q
<statement sequence1>;
/ F3 [' C9 y4 p% r3 o end;
! O8 Z t7 \1 F0 Y4 h (3) repeat % {" T6 Z$ o, y' N0 u/ c
<statement sequence1>;
( u/ E: x2 @3 \0 z until <condition>;
" p6 `. A4 X3 m( j: R8 e (4) for <condition> to <condition> loop p/ G9 X" q9 r" P9 k
<statement sequence1>;3 w, o4 w& }7 _3 Z$ s4 \; i! \
next;
4 p: Z% a/ `( N- a& ?- g3中断语句
6 p$ z; A* C o3 g' n0 b6 k waituntil <condition> prio <integer expression>;# F1 P/ d) g, w7 `* E% a" U$ H
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8 i }# {! h6 ~) G8 I% }# W以上为常用的函数！
; F' X+ V8 p3 N! _还有很多，如有需要我把资料发到你邮箱里 5 U+ U; o2 x s% T- W* U
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