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发表于 2012-11-13 08:48:12
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1判断语句& B1 ]- F4 r2 Z2 w( c K3 w
if <condition> then
; k/ y2 k7 S( d% ]* j <statement sequence1>;
! D- u m4 w/ w8 l5 Y6 ~ elseif <condition> then
. H% V8 }0 T* a0 m C <statement sequence2>;# \- S7 w& \4 {) d6 o5 v
else 2 }# [6 }2 C2 M; X y
<statement sequence3>;
2 X0 X J% |9 R7 |/ C5 ~9 S end;
* v% b% N8 k1 c% Q5 {- g L如果分支比较多，用：
- J$ I/ D5 Q2 C d4 D1 N inspect <expression>
: }1 e! F! V8 H$ E; g when <constant_list> then
* |& {, @, X+ ?# @ t2 O$ Z# b <statement sequence1>;
0 e- W; X. X. \6 Q( k H when <constant_list> then
' t( I% f f; ?) D7 [4 d <statement sequence2>;3 I6 F9 ]9 ~" b3 G
... r1 e2 T* ^5 ?$ a
else# T8 |) H/ l0 k- d
<statement sequence3>;1 G* h/ D: X6 F; h6 n
end;
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7 L! A& d8 m6 C/ N$ K+ p5 p0 @2循环语句( a" ^" |# r. H) X1 O- M
(1) from <statement sequence1>. q: _$ a# `7 e" ]; q6 }
until <condition> loop* E3 [+ ]2 D0 W
<statement sequence2>;9 ~" y) O, J+ m$ v
end;1 j `4 ~ z; L/ ^. J$ N1 k! a
(2) while <condition> loop
3 ?5 [( p% Y, V' _& K <statement sequence1>;
9 M) e& o! {7 G$ [) h end;, n3 P8 j/ n, a7 l
(3) repeat . `8 z5 H) [- B3 D) R
<statement sequence1>;
7 ~1 x9 }) h6 o a until <condition>;
; f! p1 n- K4 x9 t$ Z6 ?: _ (4) for <condition> to <condition> loop
# N( @5 Y( p" |" h <statement sequence1>;6 T$ G# C( Y2 i
next;
) ?# N( q4 M( Q% K2 z: F8 k3中断语句; c6 E5 V. a- a! A- K& r7 t' a n
waituntil <condition> prio <integer expression>;
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. k$ ^1 L1 f1 a Y0 f以上为常用的函数！$ A' T7 _4 F! E6 P- u
还有很多，如有需要我把资料发到你邮箱里 : ^' } f6 Q) a$ j8 } l4 f
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