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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
" k" U' D M- L" Z if <condition> then2 P4 G& S7 n# {. N: i
<statement sequence1>;
3 j) \ a- n N" Z$ f1 G elseif <condition> then( Y/ _) N! X6 y% t
<statement sequence2>;: E* d2 `: {( \- {% y0 j
else ( x, [+ \6 A+ `" H
<statement sequence3>;2 m2 b, e* v! Q
end;
7 y. ^3 `) \- y B如果分支比较多，用：
" n- w) a* i8 k# ? i inspect <expression>
# a1 l# f; O: f' ~' f/ } when <constant_list> then
3 b( c7 N6 N/ v* y/ U! z1 u <statement sequence1>;
/ t( v! c+ M w2 ?, Z, t! `% k! H when <constant_list> then
" T }6 R! q* E) W& d' R, R H <statement sequence2>;, }$ s0 D4 q8 _7 ~/ x9 s
...& y, D% t( H7 c% Z* u6 P
else/ L, m% \1 ?- Y' b
<statement sequence3>;! ~" L. j% d* J! C4 R% j6 z3 T
end;
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1 a" G( f7 Y0 g, ?/ c2循环语句
6 g, I$ Z" d/ v; f4 @ E# _ (1) from <statement sequence1>% a- k1 d9 g | j
until <condition> loop
_* u9 C* t. u! ` c <statement sequence2>;- A& f* Y" ]8 E/ B0 t) |3 y& j
end; u3 `7 J( O, m9 N
(2) while <condition> loop
/ U3 j8 ~1 H' |# \, o: z4 v6 U) ]6 w3 d <statement sequence1>;% M! t( O; y( ]8 k' A$ Z
end;- S3 j- ^4 m. {( f6 I) b; O$ N. J
(3) repeat
# Q- \5 a2 Y3 C2 P+ ~ <statement sequence1>;
1 H7 }# P) _+ R6 v# B until <condition>;
$ @1 R$ A& q1 c (4) for <condition> to <condition> loop" X" @* E$ Z5 Y; i! ^- v; J
<statement sequence1>;
) l4 Z9 \' m- X next;
3 J+ e4 R+ n( \$ i0 V: y. t8 F3中断语句
0 C$ U- T! f& z% u5 E" T: D1 v waituntil <condition> prio <integer expression>;4 I& H- O# ~* o
1 Z" y' x3 Q1 r/ J
$ z- H2 P. N- X7 O! d/ e" H& R以上为常用的函数！6 @9 J% \1 p4 q0 i
还有很多，如有需要我把资料发到你邮箱里 5 i9 I9 w* f* `9 E4 p6 B
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