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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
1 r% h2 p) W% P! x* e if <condition> then6 M, ~* U# k9 s, b+ X# O1 o
<statement sequence1>;
- i+ [( q& N) {& p; | elseif <condition> then; z5 z- ?" g# p6 ?5 d b: o! `% c
<statement sequence2>;* l6 ~+ j7 g2 x D
else
/ @1 X# V& e, v: L' ~! }6 C+ i <statement sequence3>;/ n. J% x, `3 X9 M0 c6 b& o6 i# h P
end;4 d' Q/ r' m# G4 c9 X" g3 [7 G
如果分支比较多，用：8 I% S/ `7 n8 ^ d9 G2 |0 h. W
inspect <expression>+ K% z) P/ b- X' I1 o% O
when <constant_list> then' |( N. J* f) b; ?1 T, M0 V t& j# f* M( h
<statement sequence1>;
8 Y' K2 i( A5 g; l6 L9 x) s% W- p when <constant_list> then
1 ]/ y# {3 f2 B- d0 j <statement sequence2>;
3 ^ O+ w) T* j5 o ...
# M1 K) ?3 Y8 ?1 I8 T else
, n* Q9 G0 q* \8 n: d+ K: B' c <statement sequence3>;+ U# P5 Y! s, `, P
end;
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2循环语句
H* |( K2 v3 y Q% W (1) from <statement sequence1>
; q4 k p0 h. r! S3 y- L H until <condition> loop
+ E% E- D' b1 h <statement sequence2>;! w! k- T5 K" x' \0 a. Y! M0 n
end;
$ I U" E# Q: P& Q. W6 X (2) while <condition> loop, E, b/ t( M/ D5 L8 [5 P& }
<statement sequence1>;* m+ h) y; L# Q3 R h0 I: S" ~
end;
& V& D! R4 s$ p' F/ _! ^5 f5 a, M (3) repeat $ k% X9 p! K& w+ i. I9 |( h$ l" p# L
<statement sequence1>;& N+ \* @, E1 x3 o6 L8 i
until <condition>;
5 C( T, }! n; v$ W (4) for <condition> to <condition> loop# _! Q# q: ^" `- ?% q$ `' K3 k: [. A
<statement sequence1>;
, n6 ^/ v! z, _0 B; f next;
( J& d1 _7 \! D$ w! P6 L& i2 h7 J- P; D) @3中断语句
) s# s; r/ Q: q! X2 t' W; N' V3 f waituntil <condition> prio <integer expression>;* s. @: \4 f! Y V3 {
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以上为常用的函数！ X. i, p: ^& {" G/ d
还有很多，如有需要我把资料发到你邮箱里
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