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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( Z! {+ u8 {" t w* n
if <condition> then
1 C; W; a) x* ^; U <statement sequence1>;8 R$ [0 p) O* x
elseif <condition> then
' ~) i/ ^1 `, B; c <statement sequence2>;
5 Y+ w4 O7 `9 d* v else , y1 A0 v, D" S
<statement sequence3>;
+ m$ d9 I% z8 i+ M+ X8 f* ^ end;0 J) \ L* e! Z+ V8 T& z
如果分支比较多，用：3 J7 B- M& J4 U5 F7 w0 {" B# o
inspect <expression>
3 U' i- _0 [ \/ g# F9 u: B when <constant_list> then
% |& X3 D5 M/ P6 L) ] <statement sequence1>;5 E6 `1 ?5 c4 |2 I6 R: x
when <constant_list> then9 ?7 q- F5 U& k7 }! t5 F
<statement sequence2>;
/ i$ D- O) H; |) K3 z9 z ...
7 h) c) s' j3 f% g else
: H% e& C' X/ u <statement sequence3>;
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2循环语句
$ u1 `! H" q( x5 X' Z F- B (1) from <statement sequence1>
% |) w% b: D: Y' ~2 x# H$ U until <condition> loop
& D+ k4 d% t' z# _1 k% f! F <statement sequence2>;; I, R. d) l! ]" U" q4 J8 F+ F
end;. G+ O( g; L6 _0 v
(2) while <condition> loop& u9 `0 A6 W. N7 ]
<statement sequence1>;1 P& @0 I* G; a+ F2 a# m
end;0 R! f8 _( a Q: O# G
(3) repeat
8 }# G5 F0 X) z2 z <statement sequence1>;
% _+ q3 n; I! f" z until <condition>;+ P7 ^. W' X( z$ u
(4) for <condition> to <condition> loop% f! Z) q j1 W/ G* Q' [9 f) u
<statement sequence1>;! y/ Y% [1 |& K8 K8 K' ^" B
next;8 J) I S3 R g
3中断语句
% I+ y- P$ i0 v waituntil <condition> prio <integer expression>;
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以上为常用的函数！! a. \) B! k9 _* U6 ~% L
还有很多，如有需要我把资料发到你邮箱里 . _. h3 N6 s% {1 j$ H
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