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发表于 2012-11-13 08:48:12
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1判断语句 v% G* u2 |8 |. p- o$ O- X' Q+ {
if <condition> then3 B! d: T9 s9 u! F6 F' d) ~3 c
<statement sequence1>;
/ q8 K( Y8 A- h; X1 ~$ Y9 Y elseif <condition> then2 b3 h! G$ C; Q+ L$ c0 u5 b+ }& t& Q
<statement sequence2>;
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<statement sequence3>;
) v% ^! e2 l, [" h/ d) ] end;
# | B( F0 R8 d$ Y3 e* |如果分支比较多，用：
4 y4 i" }( K+ |1 E- F6 ]8 ] inspect <expression>
- N7 Y& C, }! h when <constant_list> then
: J- k7 G) U5 V: f3 H' H <statement sequence1>;
5 X5 `) s3 }, o' {' x/ O3 ] when <constant_list> then
! Y. I! t- |5 A d. J8 q" |. f <statement sequence2>;
+ q: k. O; V: z6 H: k/ y2 s3 d9 s ...
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<statement sequence3>;1 ~9 d8 I; g" r. v4 s7 s2 L4 R& Z7 V' h
end;
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+ u0 h+ z3 L' j& ?2循环语句% ]! x% b9 g. y3 L5 D
(1) from <statement sequence1>
6 z: D3 _# [) q$ z until <condition> loop
" d$ j/ J8 A6 r l9 i <statement sequence2>;4 d( t- ]0 A2 u
end;1 l, \ r v1 R! [0 v0 e
(2) while <condition> loop
# h' R T E/ d/ P- Q; K <statement sequence1>;8 e+ J! y ~: V) j: F# m
end;
% \+ b+ A2 \: Q4 u (3) repeat " A* |/ _$ u- \6 X8 @) O) A. o
<statement sequence1>;% \5 p( H) |+ s
until <condition>;
. j" z3 y2 q$ E! F- d: W0 l (4) for <condition> to <condition> loop
* e/ f* q, i+ m% w1 Q <statement sequence1>;( E6 O; B, I3 k+ W/ V( d
next;5 G. Y, o s9 }- a4 O7 V
3中断语句 S7 E# O. K% j
waituntil <condition> prio <integer expression>;
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& U6 ~2 L7 V0 M, e2 ^, O& I0 s$ D以上为常用的函数！
0 o e/ l8 l$ m+ i* n6 J; l8 u还有很多，如有需要我把资料发到你邮箱里
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