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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# B) a6 b5 v1 q5 j2 B/ S
if <condition> then
8 ^" k* m+ Q" C/ `0 { <statement sequence1>;( ]9 J* {& T8 M% k* ^. G8 V4 W4 L' c
elseif <condition> then
. \7 U1 A. M* S# n <statement sequence2>;
+ O3 @% q: J% Q/ E3 X3 X else / l) |5 e$ v+ I4 O& X9 o
<statement sequence3>;
9 ]/ u5 b! Y$ M2 W# c end;
# U. n4 d) e" w }如果分支比较多，用：8 s: {4 d U" h: `8 Z5 U4 ]
inspect <expression>& X$ |2 B+ o/ d1 X
when <constant_list> then
) L/ T# A9 z4 R <statement sequence1>;# h1 n9 ]5 W( z+ L I- K
when <constant_list> then
' Z3 ^& D1 z/ X <statement sequence2>;
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else
' Y# l1 f% @1 q# P; p <statement sequence3>;% E2 p$ K$ e6 v* L
end;& N+ R& x! e6 X( q, q
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2循环语句/ J2 f( M' j3 u
(1) from <statement sequence1>% ^3 s2 V8 |, y1 z" E
until <condition> loop
; b, W5 B' o0 b& w( u <statement sequence2>;3 E( v2 W* K J4 u, w
end;
+ ^# p" \9 j. ?6 R2 G! S- \! o (2) while <condition> loop
- m9 ~4 X) M" g5 j8 l <statement sequence1>; }. Q: m b; _- ~" E
end;
- ]8 r! b* |6 u, c (3) repeat
+ o1 K2 Z8 ^8 k <statement sequence1>;. ]% }" U! Y4 b# K' V/ |9 N
until <condition>;
" i/ ~! X; H3 W6 x (4) for <condition> to <condition> loop
. P( q5 T! n% T7 w9 t6 O& C <statement sequence1>;: b! F" [- p6 y6 {0 m7 I
next;6 ?: j' M& `! @: o
3中断语句
$ @1 f3 g1 @) z% q/ w( I6 n waituntil <condition> prio <integer expression>;% i8 U+ K! f9 b5 O" u0 n
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以上为常用的函数！
7 N q7 n, X. q2 F还有很多，如有需要我把资料发到你邮箱里
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