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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
( l1 u$ P1 {) M( [' e. r if <condition> then# P* S3 Q: G% O4 m
<statement sequence1>;) [% v: D( C% X# O% {5 }- j
elseif <condition> then
1 N( Y- O& t$ V <statement sequence2>;
( Q9 ?, x3 h- ~! Z# W- ^; l. F: F else
6 _% K {( O3 |% S( u <statement sequence3>;
1 g6 |6 K* r2 Z0 A) [% C8 f0 p end;. B8 h! o, H: e( m+ J/ K5 ?
如果分支比较多,用:( z' X' J) d1 r0 M, K2 A" g6 t
inspect <expression>
6 Q c% x1 H1 j8 d$ w' C+ k1 e1 _ when <constant_list> then% |0 V( K: T5 _% s& A3 k+ T
<statement sequence1>;0 o$ m& v [6 M: L% q( n
when <constant_list> then0 c2 q0 b! r; d( G
<statement sequence2>;! Q! @% K- J7 Z q, X2 t
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else
0 L; @0 ~/ R9 I) k5 b <statement sequence3>;
! s' V) {" s4 L* e6 X/ j/ O4 ?end;
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9 o9 ?7 W+ N6 b4 m2循环语句8 s: L0 Y3 R$ c* r4 c
(1) from <statement sequence1>
7 l4 H" \) d- a# ^6 c until <condition> loop
) L" d) [% D. x: s- O: g <statement sequence2>;- l5 h7 }0 L3 F& A
end;; I# U5 j7 t: U7 _5 n
(2) while <condition> loop
4 T" l) b) x1 }, r0 f <statement sequence1>;
$ x0 C- m0 A( v# G/ D) G" P end;
' X9 s6 {+ c4 r% J8 t( O s7 Q1 Q: \ (3) repeat
5 ]% Q. x5 {: @) p, a <statement sequence1>;5 T9 X- y( D1 p: V( C
until <condition>;4 L5 F) p ?% o( K9 h4 |
(4) for <condition> to <condition> loop# A9 ^8 h, _0 @- T1 i8 ~
<statement sequence1>;
$ k) ]* h" @) Z3 n$ u next;9 G8 S3 e* q: b* h( \
3中断语句6 n% z/ p. C. U: _
waituntil <condition> prio <integer expression>;
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7 d4 j6 K* I7 C! e以上为常用的函数!
8 k. z% d0 ?( D: Z, W5 J还有很多,如有需要我把资料发到你邮箱里
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