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发表于 2012-11-13 08:48:12
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1判断语句8 a0 l) K$ `- A6 b
if <condition> then
4 x, k4 o$ {# I9 I0 \/ J6 L <statement sequence1>;
# x/ z! h- e/ u% h8 K5 Y0 K. h elseif <condition> then3 `1 Q( p Q I
<statement sequence2>;
: p; ^ u4 ]: y- B" ~' N else 4 h9 T6 M" Y* ~0 l
<statement sequence3>;
8 K f6 O- m. K$ ^% Z9 Q end;6 R# @; c& I( g9 g, q
如果分支比较多，用：
. `1 }# c3 m* c inspect <expression>
- y1 C/ E" i& P, s- F when <constant_list> then/ S: W8 f- }( b" v$ E
<statement sequence1>;+ f7 V1 h0 o$ }+ q% o1 s( N
when <constant_list> then; [! y5 _* g! W$ N9 U0 j
<statement sequence2>;
B1 v* U* C8 ~/ D! F7 @0 I" ? ...
5 h4 Y0 q3 L+ ? {) w else/ j5 K. d1 Q- f4 u. s: j: Y
<statement sequence3>;
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4 ^5 J+ q: k1 |& s' i. D6 }2循环语句
! N/ f6 P0 b% z/ X' D' o7 {. X# s (1) from <statement sequence1>
- D3 e5 f1 n* \' F until <condition> loop
4 ~1 F& X7 F# e. M" H <statement sequence2>;+ ]' _- z# I% A7 Z
end;
L( a% Y: C' r( n* y (2) while <condition> loop+ f& C' X1 Z1 S* ]7 h
<statement sequence1>;5 s j7 t- D0 X+ T
end;
1 s* ?8 a- S* g# J- L" D* a2 { (3) repeat
8 g$ p7 h$ X7 i8 v6 f <statement sequence1>;) U+ @/ S9 I" ~; Y
until <condition>;
+ ~9 u2 N) J" o" F3 i (4) for <condition> to <condition> loop
( j2 O& t' E9 K5 ^4 p5 } <statement sequence1>;
: x! A" V" _+ p next;
; M7 @$ v+ J7 U& _: Z# m3中断语句0 n" C ?4 Y" ?, v
waituntil <condition> prio <integer expression>;8 y& B6 A! m( M. p& R
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# i! k, s, L$ b4 E5 [) w1 Z以上为常用的函数！$ `. |( \# ~7 Z) w" E" }" Z
还有很多，如有需要我把资料发到你邮箱里 . ]: X* ]% z: P a' o- u$ v9 G- P& @
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