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发表于 2012-11-13 08:48:12
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1判断语句/ J t% B, `7 n
if <condition> then, d: q; S6 k6 e6 A- w, B$ `
<statement sequence1>;
* @; H7 j# y6 z& K) t' U elseif <condition> then: h/ ~; p& \3 W9 V
<statement sequence2>;
F+ M* f6 p4 ]% g( [( { Z: ] else
% q1 C2 v" \1 y' _ I- ]' F* C9 b <statement sequence3>;
0 U' U; G1 ^3 G& b9 l: { end;) S3 d- Q# H7 j1 Z; n& x" X/ ^
如果分支比较多，用：$ d- K! u5 }* w1 c% f; t
inspect <expression>6 Y- i, p) N: ]" E# [: u
when <constant_list> then
; ~( K9 U4 k# Y. S4 U+ c <statement sequence1>;# _; f' W; F2 `* M% N
when <constant_list> then
0 @/ F& F5 @7 y# l1 Z* j }5 K <statement sequence2>;
$ d: p1 A' l+ ~ K% \ ...
/ V7 i9 u7 C3 N& s2 k else
0 F3 ~! d) F6 B4 N: | D4 u <statement sequence3>;& f+ f7 ^ ?! w! i' R! q
end;
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. V( l9 `9 r# W& C8 G U2循环语句
8 r( x8 ?7 {" D! `$ ~% ~ (1) from <statement sequence1>
6 X7 f! c- [9 J# z0 N0 N* O# X until <condition> loop
* U$ _+ ~# j0 y3 Q! z, i$ x& @ <statement sequence2>;
6 R% l6 H( G& I. _8 ^ end;
$ e0 c/ I4 _8 p6 u1 O (2) while <condition> loop
" b+ F- P. H @1 }( _) f <statement sequence1>;
: h* W! N ?. { end;8 @. d! c" a1 q/ n+ P. {
(3) repeat
4 g3 E8 y+ P5 H" J' h/ j5 | <statement sequence1>;3 \& h8 T& A) \1 Q7 r, C. D7 d5 C
until <condition>;
& q6 [/ s# Z0 f7 d (4) for <condition> to <condition> loop0 W8 ~4 P% }- h- ?% y
<statement sequence1>;
8 N$ O$ G6 Z+ u* B. {* ` next;; k7 f: F) k- F/ M7 ]$ P3 C7 ?. b
3中断语句
7 Z* H2 d' [, c waituntil <condition> prio <integer expression>;
: G+ x/ ~0 ^, X4 p! ~% i/ E/ ` `6 _4 i+ M0 D" l% k& F
) {' U, }0 b2 v u2 F; b( _
以上为常用的函数！
& A8 V. P! a* h/ ~# o% l还有很多，如有需要我把资料发到你邮箱里 1 r4 I" L* A' \1 A- y
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