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发表于 2012-11-13 08:48:12
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1判断语句, C4 y7 D& ^+ |$ n- G
if <condition> then
$ O/ H# }8 U9 s7 g# U/ s- f. v4 k <statement sequence1>;6 A6 R, l' a( D. F/ ]) c4 H+ O" ~
elseif <condition> then( H7 |) a) M8 A) F% h
<statement sequence2>;, z" h6 \6 f2 H3 p+ I. v
else
, W3 _8 A6 p. h+ W$ l3 ^1 N# ?1 f <statement sequence3>;
$ n" T% w4 v0 H% ?4 g1 I end;
+ ?2 E5 ?" x+ u/ j* ^; E+ ^+ u如果分支比较多，用：5 o$ @5 T" S! o. [1 q/ F
inspect <expression>3 P, k$ N7 i( }4 `
when <constant_list> then
3 v) k% G% C7 k& \ <statement sequence1>;
3 N* ]9 O" q! C when <constant_list> then% G8 x" N" l4 B: \8 V$ B) j3 P
<statement sequence2>;
7 _ F2 P2 d# o$ L$ S ...
, s! t- q" E4 w- U else
# X; v& I: h4 S! [9 d/ ]2 s <statement sequence3>;0 w V+ E. s+ o
end;6 k) X; O7 s3 [! m
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2循环语句# v/ b6 C4 X, g3 M
(1) from <statement sequence1>& _- |& U( X- `' ]0 ^8 x
until <condition> loop
; r3 R7 W" T/ J1 B+ O6 y <statement sequence2>;, d, _9 e8 A& C% o% c9 o
end;
) a* V% g) I$ N8 a! _ (2) while <condition> loop7 m% o& y% J2 j/ ~% h
<statement sequence1>;/ |, C$ L/ x7 i( ?
end;$ X: X* ~* ?; W/ |& \
(3) repeat / K5 P6 V% I5 u
<statement sequence1>;4 B( D; J, a. n% }8 B
until <condition>;0 }! n, x/ n, a, e: r
(4) for <condition> to <condition> loop
& D/ f$ N* e3 y: G4 H6 Z <statement sequence1>;) t) h$ Y) Q1 Q1 c8 c
next;
3 u* R* q* o1 F/ l( S3中断语句
@0 Z& g0 i2 O) f: u waituntil <condition> prio <integer expression>;9 `* D4 K& o1 Y' b. W% ~( i
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以上为常用的函数！
0 I2 d! N: `8 P; @0 v& p还有很多，如有需要我把资料发到你邮箱里 * u1 K* C. a* e: K t" N& c5 w( I
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