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发表于 2012-11-13 08:48:12
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1判断语句
t) L7 Y- Y7 E8 B5 ` if <condition> then N, {* Y3 p! O" o
<statement sequence1>;& l7 g1 `" q' z5 J
elseif <condition> then
8 Q1 W4 \7 S! C+ {( [5 X& _ <statement sequence2>;& j @; n A+ x( o$ X3 S- E C
else
4 i5 x& r; \6 P N6 D; j( z1 G <statement sequence3>;( q9 A( z. G. B/ H7 H8 I, ], s
end;
: {$ E6 I) z$ n' Q6 D1 M/ H' o如果分支比较多，用：
4 x: B2 E s/ J5 u inspect <expression>
$ h; \% @1 [) S( K( l when <constant_list> then6 R( ]; M! l: p
<statement sequence1>;4 ^ a" r; E# E- b: ^
when <constant_list> then0 U+ x* N5 _& Y2 ?& I
<statement sequence2>;& g2 h/ c4 ]7 @3 k9 v. p7 ~+ x; M
...
$ k- V, R5 t! \6 C+ X else$ |8 G) S* {& y$ N% N. M: u
<statement sequence3>;
! t1 h# p, V. g! G0 v. Yend;
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1 `: q1 }, D& H) e7 x2循环语句3 J2 M' \( n6 w/ T4 M" o
(1) from <statement sequence1> e2 W/ D- X) ^" C- W1 T
until <condition> loop
! S- Q+ e9 l+ v8 o* ] <statement sequence2>;: q0 g) v* j4 D8 U! s* W7 m% |. C. `
end;
. B8 d ?% f- V; W (2) while <condition> loop
3 {! J0 o- x! C: k9 S <statement sequence1>;
[! h& x5 k( q- W% {+ j; K5 ? end;
, h& i' n' f b2 ~) ]6 r (3) repeat
0 P" T$ Z' a( M% H% J! Z5 B( S! p <statement sequence1>;& N$ v0 T* p- w5 T! u8 M
until <condition>;
& h4 y: w7 r! T( G& z8 W (4) for <condition> to <condition> loop
# y5 u' F7 U$ T6 ]2 ^2 t6 \! P$ Z( _ <statement sequence1>;( i3 P+ a2 _0 s: E
next;% i$ k; M, S! F9 y X$ X
3中断语句
# R3 Z K% W% G4 Y: o% X5 p# R waituntil <condition> prio <integer expression>;1 C( [5 Y7 T5 s- p! Z
0 e5 U% s2 M' [3 e9 _
; I1 F. B9 ]& S以上为常用的函数！2 q0 F; X& j) h( G# j
还有很多，如有需要我把资料发到你邮箱里
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