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发表于 2012-11-13 08:48:12
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1判断语句+ `$ c; c- {. j$ p
if <condition> then
n8 b( V, b9 f t) X <statement sequence1>;$ v: S* p. Q8 D- O9 R' S
elseif <condition> then
. n8 _& N5 `2 V4 W! M& n <statement sequence2>;+ o: |4 W- q$ d
else 2 x. G0 y0 H" c# \
<statement sequence3>;
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如果分支比较多，用：
, o% G* D5 C+ _- }: c8 z inspect <expression>
# e0 A" K9 R9 l. F. C H- Q1 ? when <constant_list> then
2 U4 c8 c t8 v9 [2 y6 y4 U9 g <statement sequence1>;
; h. N+ E% p+ u7 M0 T when <constant_list> then% x/ H$ a4 Y5 c
<statement sequence2>;
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else( H7 x8 m7 a1 B
<statement sequence3>;
% k( H( e/ j7 o- nend;) r% }/ |7 X* |' X( t+ H
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2循环语句+ y' ]: _- ]; f% N8 X3 U' [
(1) from <statement sequence1>$ U+ t$ Q+ R6 I& C; p8 t, G- e
until <condition> loop
# U) [, `" b! a' {/ Z; b1 H b <statement sequence2>;, K) K7 h" P- u5 ^ K! Q
end;% ~/ \ b: O2 Y3 w) m
(2) while <condition> loop
/ r+ u; S- R& \% z9 f: z3 G, C <statement sequence1>;, P6 j l) R% @* j0 _ m/ I
end;
2 k) E0 ]- ~2 t- D+ G2 s4 A( o (3) repeat $ r# B+ |' i1 i! D
<statement sequence1>;
- l8 N" e5 p: t5 f5 R1 a until <condition>;
& ^2 g q- |+ o. v; p5 Y, z1 [1 [# g7 v (4) for <condition> to <condition> loop& O& P4 b. k1 Q! S$ P- r% ]/ X
<statement sequence1>;( ^2 Q6 f& M9 _- p; H
next;
# a* ^3 @8 p0 C3中断语句7 A, x$ I; W U8 H. R
waituntil <condition> prio <integer expression>;
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! k: J! }5 a5 j4 D8 A3 w" J/ k以上为常用的函数！
3 M# u& P7 c9 ]9 z" B1 C还有很多，如有需要我把资料发到你邮箱里 ' w% L/ K! R$ [" K( m
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