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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
& c9 U6 q% c" j! l% b if <condition> then. h8 T( a1 ?3 D5 l! \
<statement sequence1>;
$ x) d4 [9 {, O& O elseif <condition> then
' ]' G7 b* L& i! N <statement sequence2>;
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# s; `: y; r5 o6 G6 }; D9 t& Q <statement sequence3>;! k9 x- S& k1 R# e. x! u
end;
1 N; e' F6 a0 Q( z如果分支比较多,用:8 j; i' K+ L" V) [0 e, l
inspect <expression>7 f3 l# U% O b5 x
when <constant_list> then& w/ O# F7 t+ j7 X
<statement sequence1>;
|* x5 | W& O when <constant_list> then% O+ U. D2 O% W5 F3 ]3 n" v. q
<statement sequence2>;
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else( h# k5 G7 \2 n1 Y8 e$ p
<statement sequence3>;
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6 S8 ]2 W1 T3 w9 @$ ]2循环语句2 }8 Q& t( j. C* ~! X* ^ T
(1) from <statement sequence1>% d2 f: r7 k7 X! b z$ Z @# D0 J( Q
until <condition> loop9 v6 n$ c9 l4 f1 v) `* \
<statement sequence2>;9 M) V5 \- R8 ^7 \% @' \
end;
9 `- X# h N+ H4 X$ b (2) while <condition> loop) H, p, Y$ s3 c
<statement sequence1>;
4 B- c- a# u8 V6 ?& o end;
% w+ U/ P0 P: F (3) repeat ( A( H: r6 w0 @/ j6 S1 C4 h" ~" B
<statement sequence1>;( V4 q w& t/ Q0 M
until <condition>;
& H8 y# l. g9 {) _ (4) for <condition> to <condition> loop9 c0 A' B# W4 e# ]7 I3 h: n
<statement sequence1>;4 T2 _& ~/ U" e1 T
next;
- w# i0 r& ?+ D- y; C+ U3中断语句3 F$ S% s# S: d
waituntil <condition> prio <integer expression>;- q# l$ H/ m! @( u
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7 _& w/ q/ \9 ~/ L8 b' q以上为常用的函数!( T9 o2 r" f" d/ N" x" q4 ]
还有很多,如有需要我把资料发到你邮箱里 , \7 z; X! b; c8 L) M& |/ [; W
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q: a4 E& T( |6 G3 w7 z0 \% r4 h0 Y Z
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