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发表于 2012-11-13 08:48:12
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1判断语句
2 Y5 [# }! h) z3 g( `; Y if <condition> then
O9 I J7 K! |, t4 Y( l7 S/ i <statement sequence1>;
5 M& j# \5 D' C elseif <condition> then
+ Z& t6 x5 [6 X1 ~$ N% h1 N <statement sequence2>;+ R% k5 v$ T; U! _" `
else ; V0 Z# N* Y( \+ i
<statement sequence3>;
% r( ?) e& l; a2 w3 S end;
' v9 {" H/ N& \( s( [如果分支比较多，用：# C- o) f, Z2 k
inspect <expression>- t5 }& {! F" r- n) _8 |
when <constant_list> then2 w- G7 {* j W O
<statement sequence1>;
& R( |9 t. \+ r" B when <constant_list> then
/ v* v5 L6 Z& U) l6 @9 ^- ~8 V <statement sequence2>; v; B) @" d4 w4 r b2 Q; l
...
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<statement sequence3>;, e H* b! X, y/ _# J, z5 o6 u# W
end;9 R7 b$ T, {2 i6 O
# @$ e, b+ W7 `* x3 D2循环语句6 g+ b0 V! ~) F7 O; I, ]2 G, ]7 b
(1) from <statement sequence1>* o, t9 T) ?3 k0 u
until <condition> loop* \: ^) w. k" _+ F0 ?8 i
<statement sequence2>;
. [4 N5 z( Z; G, p& g0 ?; O8 T end;
7 D6 v/ O8 ^; W4 b5 J, ~ (2) while <condition> loop
% _: s9 r1 P; O# M+ `4 ?/ ] J <statement sequence1>;, k* Y, J' a3 O
end;- {4 j4 n! R. q: B) w
(3) repeat 4 p: @' Y5 b* N
<statement sequence1>;
! {$ O) }! a# ? until <condition>;
! D0 \- ]: V' U" j# T9 K (4) for <condition> to <condition> loop
3 V- I( ?8 _% N3 b; d <statement sequence1>;
. [/ p" I8 ] D3 H/ o next;1 l+ i! u) Q: I" Q
3中断语句
: Y% q- A- B6 n3 o" p1 v waituntil <condition> prio <integer expression>;( S# y, Q( X( B. g3 n1 j, Y5 B
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' f" Y J, i: R/ l+ O. W3 U以上为常用的函数！
$ n* |3 W/ v+ J3 U" e还有很多，如有需要我把资料发到你邮箱里
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