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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, F# G1 K5 ?; L2 A$ E3 o
if <condition> then' B$ `1 Y( B9 l+ s
<statement sequence1>;+ p) W2 p1 K6 y" G2 l% Q' l
elseif <condition> then
. A2 y4 ?: b- q# Z( Y& [3 I& B <statement sequence2>;
+ \+ x9 Y- w& C7 j" r, l else ) }, D* D/ A% W1 C0 y/ ^2 q o
<statement sequence3>;
+ U8 q/ K/ r# x$ \1 F9 D2 Y* K end;' F- g5 f! o/ O. ~# k0 v7 a( ?
如果分支比较多,用:
& V2 D% v/ T* `' U* h% _ inspect <expression>
! F( @' G0 \& j p4 T$ [% h when <constant_list> then
( v% |( x' D4 U. B <statement sequence1>;
) `5 J$ a3 B4 E9 m when <constant_list> then
1 }2 N) x$ Z& z7 F( c3 G <statement sequence2>;3 H( ]7 Q) y8 v/ n' [5 ^) g
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else7 `" ~- \- F6 H, O/ A+ K* j; W
<statement sequence3>;# N/ F& H0 e8 J8 u
end;
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2循环语句9 H3 F1 I( `- u2 Y/ m5 t8 @
(1) from <statement sequence1>
6 d( U* q1 n: ^( O until <condition> loop
! ]5 r0 u! A; \# s% m+ a C <statement sequence2>;
" V" W4 W+ _% @# d( \ end; n* N6 p5 b V o7 u' ]+ d' ]/ X" ]
(2) while <condition> loop
' l# V8 g j' V/ \7 g <statement sequence1>;
& F U- P( ^4 O: _1 ^3 n end;
2 W* {. i% x- m2 w! ~& Q4 j) l$ r (3) repeat 7 n6 q# @; P: ^5 w/ M
<statement sequence1>;+ K$ Y" ^8 |( p) m: Z; T
until <condition>;2 I6 z$ _1 U' F0 R9 `
(4) for <condition> to <condition> loop% V) I+ D8 I' F
<statement sequence1>;
1 p( E* e& h% R$ {, F5 J next;
. M ]' [( T# ]. V, W! d3中断语句
: v6 \$ o7 j; L, Q waituntil <condition> prio <integer expression>;; j# d) l5 l# L5 o* t( s# }: o
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以上为常用的函数!. s3 J' M: u2 \/ d5 C( S* e4 I
还有很多,如有需要我把资料发到你邮箱里
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