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发表于 2012-11-13 08:48:12
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1判断语句
: g4 U. {2 x0 ]0 s9 \# ? if <condition> then$ o2 d' H9 a; E( b' {
<statement sequence1>;, ?8 Z0 ^ e q7 J
elseif <condition> then
w) V: e* K) u. C- t b4 t <statement sequence2>;
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<statement sequence3>;
' k. M, [3 C. A' j5 s end;
7 N/ W& X8 l7 ]% |. Z% Z如果分支比较多，用：
' X/ Y: F- C1 q: y& y inspect <expression>
8 p: v+ ?: q/ Q" D" L" }# L when <constant_list> then
# s0 j8 w8 b! ^. K. n% \5 W5 @ <statement sequence1>;
8 M$ ?: q5 I7 {( b' h$ h when <constant_list> then( Z: B8 U$ @/ V$ @9 l, Q+ j9 j; d
<statement sequence2>;
9 [ l$ u! B4 d' T9 A# ^8 g2 ?; [ ...
5 H& Z4 v" S k) Y5 h- O1 o else
* {; }! U. r# ]" e4 @; y. O. S <statement sequence3>;
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2循环语句5 @4 {9 ?# g( ^- B
(1) from <statement sequence1>
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<statement sequence2>;9 F3 ]% I% v5 l- O ^0 a
end;' _* i5 {0 @/ t; ?
(2) while <condition> loop
$ d3 H- p, c) ?. G <statement sequence1>;
& l8 I4 T9 r# U, n% z' ? end; A0 L, R- {' q8 T$ K
(3) repeat ; H: j `. _8 i5 j8 W- b/ a: t
<statement sequence1>;( ]) Y1 ~4 L; x( S6 Y4 }
until <condition>;
3 A9 v" |$ ~* O) |6 g, ^ (4) for <condition> to <condition> loop7 Q" o. ?$ j4 _7 k: y* h
<statement sequence1>;' m# j& c- ^% `2 j2 U2 U1 I& E
next;# |8 |5 x7 Z& E5 h
3中断语句# O5 z% q" p) f. x
waituntil <condition> prio <integer expression>;
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以上为常用的函数！
7 z- L# u9 y9 ~. r8 G还有很多，如有需要我把资料发到你邮箱里 6 k# T5 f0 H0 u$ B& W6 Z
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