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发表于 2012-11-13 08:48:12
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1判断语句
! _7 ?" Y; j/ E1 f, t* { if <condition> then \1 ]; l8 I1 d
<statement sequence1>;
# ~; ^& u8 R o6 ]" x8 H+ }/ Z+ G v elseif <condition> then
% L6 v/ ?$ s' R5 K+ O8 ^ <statement sequence2>;
3 K+ j8 g9 j& g* B4 s0 u) E# U else - ~0 y' |3 d% B
<statement sequence3>;
0 h7 D0 A8 n- }) A& M5 z end;
: r' K4 e) ?6 [3 ^如果分支比较多，用：
9 B7 r7 C! v) `% F0 Q" _ inspect <expression>9 S Q1 ^4 Z- Q1 ]" l
when <constant_list> then* e! l2 z5 O+ ~. J
<statement sequence1>;8 U7 _5 J! `/ M0 _3 S9 ~5 ^
when <constant_list> then! F* q3 @3 _0 T; w& u
<statement sequence2>;- A) S- V7 m0 c9 r$ z( k9 V0 v
...
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<statement sequence3>;
$ Q" ?. V% [7 c4 _% q+ z' xend;9 v9 ?0 u! f' A4 P( d
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2循环语句8 o- h- u3 e& {2 W% Z+ e$ \+ k
(1) from <statement sequence1>6 a0 b+ A0 u- z/ A/ V; h! R% |
until <condition> loop' y" L9 z# q8 q6 d" G, Y
<statement sequence2>;
4 [& f1 u7 L$ e1 i end;
' r9 R5 l/ `2 v9 C (2) while <condition> loop5 `- ~" i! _7 r- F* a8 d, G
<statement sequence1>; b, I# M* [3 X- h5 R
end;, D/ T/ a0 n' b/ U7 o
(3) repeat
' K p! _" B' A <statement sequence1>;
X$ C w4 F* b# x' Z until <condition>;# V6 Q/ ~* ~* W H8 ~6 j. [; t2 [$ R
(4) for <condition> to <condition> loop9 J" J% f9 [& E% O& K5 D1 D, B8 d
<statement sequence1>;
6 e! G& G% b# ]- C. H% { next;! N4 i7 t: l3 v# @9 C( z
3中断语句: I( |, N' k% p9 K/ E- O
waituntil <condition> prio <integer expression>; f. I: u9 G0 e8 b9 b8 c) S& b! P
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0 c( `- a. u4 n# b2 W' Y以上为常用的函数！
" r! d/ n! O @/ t还有很多，如有需要我把资料发到你邮箱里 : _& V- v3 J2 @9 c! T
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