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发表于 2012-11-13 08:48:12
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1判断语句
/ G. D+ r7 y- V& Y: T' D if <condition> then9 Q/ R* }7 t+ H1 d
<statement sequence1>;
8 Q# J& E5 o) o8 `) }; a elseif <condition> then
" N4 h% F. Y+ e5 P8 P <statement sequence2>;: Z$ t3 t3 s# {7 L( I- Q
else 6 A( J2 j. v) F& H7 x3 m
<statement sequence3>;
* n9 U9 \ K" Y9 z' | end;5 ~: R, ]% @9 u" z* W
如果分支比较多，用：& o. e- h$ {4 b. l/ u1 Y
inspect <expression>/ `! v9 L9 `" P% x- O
when <constant_list> then
: t# x# I0 j& n4 b: M4 Z <statement sequence1>;
% }8 Q' F% ?' m: G9 H1 G+ ?0 ?, C when <constant_list> then
+ u0 u$ R$ U) R, z' Y <statement sequence2>;, C: b* G& r! } L0 H
...7 p7 B7 |, \$ `8 j% F# n
else) Z0 L. q3 r+ H( l8 f. C1 h
<statement sequence3>;
( S* e; X: p6 pend;
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! U0 u2 Z- \8 |8 _2循环语句2 ?5 M4 C, w, ?
(1) from <statement sequence1>
& s8 i8 ~4 A! o1 G, ~/ K/ j until <condition> loop$ P3 n8 h: p9 R: W. j( H
<statement sequence2>;# {; ~. m& r* a( F2 }! h
end;6 L& x2 t% G0 V9 K
(2) while <condition> loop5 O) s# u" v) J' K; m7 t
<statement sequence1>;% u+ s3 z2 ?9 y, x7 x
end;6 R$ x8 ^" D& D) b3 [
(3) repeat
- ?8 m/ @ a' v1 h1 N$ C* c0 V <statement sequence1>;
8 R* Z% L! Q& X. j6 o1 E5 W until <condition>;! I$ f" A0 m! L9 {" O* X
(4) for <condition> to <condition> loop
/ e+ l6 o) _; ]' \) a <statement sequence1>;! S+ `9 S* K1 p3 v0 e! G' t8 f
next;; `7 u4 P5 U/ D
3中断语句! H4 {/ c3 r' G4 i6 \7 i
waituntil <condition> prio <integer expression>;" u/ w! n1 {) e& |/ [ v+ h9 A
2 z; Y( w- v1 Z) N* D
* R' y' A: x0 P$ [0 E以上为常用的函数！
. \+ V t+ O- n8 [& Q还有很多，如有需要我把资料发到你邮箱里 - V7 T. _3 k. b! N ?- X( L# o( x
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