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发表于 2012-11-13 08:48:12
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1判断语句
. j, O8 _5 _1 y( V& } if <condition> then9 [/ @6 n4 `9 [$ U( q) R
<statement sequence1>;& ]: {4 {+ X& y( q" I2 l
elseif <condition> then, w1 j/ X- p3 H5 \3 O, s' @5 q
<statement sequence2>;$ r+ ]2 T# E: T0 h* l4 c
else . R5 l2 l( {; T
<statement sequence3>;) F- G/ p4 t2 P9 V6 ?' a7 Y
end;
$ C% R. ?( l/ f, l% S如果分支比较多，用：
3 s. C6 m; P: v$ _( _3 y+ Y! D# }4 k- X inspect <expression>) {4 J" P9 ]9 N T% y
when <constant_list> then
, p# I7 |0 J/ E* ?" E( d2 y% F <statement sequence1>;
6 i& I% ^2 J' j6 D+ x0 { when <constant_list> then4 T5 I% a1 l; n) y' q
<statement sequence2>;
1 P5 L3 H- p* P+ ?4 S% { ...
0 b% k* Y! i1 _* S9 R6 E5 D else
' a6 c& w% R# E1 l <statement sequence3>;- L$ y0 W, [+ N# R% m
end;
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% e0 ~, d: l+ z2循环语句
& ^; U x6 V* ~/ [! _9 Y& S& q( ? (1) from <statement sequence1>+ s' S0 l6 K3 s
until <condition> loop9 r' _ m& M) E5 v$ Y3 H
<statement sequence2>;
0 e/ L7 B( U+ U' ]9 Z1 X: X end;" v+ `3 p+ u& w6 S" r, ]2 d
(2) while <condition> loop
8 y+ U& ^6 j6 X" m" B3 F, `) E7 H <statement sequence1>;/ ?& s$ s5 ?! H8 S( w
end;8 R. S: Y; |/ j. i- z- c
(3) repeat
6 P* t' y& ]& H) _) P" f% z* o6 K <statement sequence1>;
7 O4 s+ }. m8 R; s0 m3 [ until <condition>;# I5 q/ v+ S' W' M+ B
(4) for <condition> to <condition> loop4 i5 o1 F9 ~0 L* o0 {, u: W
<statement sequence1>;
5 q; \1 {0 F- t1 Q! u4 U next;
$ t3 P; Y& H! g6 h3中断语句
& ^! B4 X9 w( L- ^& G6 Q7 y waituntil <condition> prio <integer expression>;
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, q. F- u& o% Z5 A+ b/ K7 K* _' g以上为常用的函数！7 a9 x, j% E4 \: T5 l) W
还有很多，如有需要我把资料发到你邮箱里 ! y A) w2 g8 [. p& \
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