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发表于 2012-11-13 08:48:12
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显示全部楼层
1判断语句
W ]* i/ u/ b' P if <condition> then* v. o5 U' |' W
<statement sequence1>;! i( g% v2 @1 q& v! T6 Q! M
elseif <condition> then; q) s6 c* y8 q- d
<statement sequence2>;
. |% n) L: j; E% J4 q y G else
& s' W; Q7 F0 W, n1 ?0 m9 X <statement sequence3>;* s# ~6 o! e7 l: F3 t
end;
% b, `2 n5 C: d9 Q1 O* n4 L- p) S: y如果分支比较多，用：
7 I g+ ^- r+ J' c7 x7 ~& l* `; q inspect <expression>' l% C' A7 Q! v: i+ Y! }
when <constant_list> then2 B- U8 W+ K/ ]/ c& P
<statement sequence1>;
2 w* t! ^" i7 e: C4 S! @0 Y# ? when <constant_list> then
1 m$ Z7 I$ `& V) c( ]! b$ J <statement sequence2>;8 e8 L9 R3 ~$ A) ]2 U
...9 e8 e" w0 Q4 s+ I) _; f" Z
else p& ?$ X1 [6 A' D4 C- S
<statement sequence3>;8 h4 o v' c% }' g' P6 S* e
end;
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2循环语句
* j0 N: _$ M; b: [/ b9 L; h: U, q (1) from <statement sequence1>6 b: s* U3 Q1 q2 o
until <condition> loop& e7 y+ O7 ]6 Z* N) a
<statement sequence2>;
0 S3 u5 ]( h5 k6 b7 j0 O- r end;' C8 n# W. }- Q. f: n# h
(2) while <condition> loop
# \2 a2 E5 c. ~9 ?( V: f- | <statement sequence1>;
9 x s! U8 @1 y2 Z end;) ]2 ~- W2 D- C+ h+ e8 q4 z
(3) repeat
9 t0 F) c. x& L# `- ]: X <statement sequence1>;: }; B! p9 r4 t/ s
until <condition>;. w# ?! _# o# k C' |' v
(4) for <condition> to <condition> loop
! ]& |' W! h* Y% p7 A8 G. E <statement sequence1>;4 l' r% x# G* z6 s& r
next;! P6 ^+ W% y0 V
3中断语句
% B/ v& {5 @- w2 _/ i waituntil <condition> prio <integer expression>;- y% q4 s& V3 w1 z$ ]; S# t, {
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2 m" A; p5 A5 }( L1 v. B$ o以上为常用的函数！
$ b8 ^2 R! j( H! b还有很多，如有需要我把资料发到你邮箱里 2 `. S0 [% A. k9 n8 q) M2 l
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