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发表于 2012-11-13 08:48:12
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1判断语句. `: y) y+ ]! S( j9 s) D" D1 i
if <condition> then# B6 e7 Y% m8 F( h
<statement sequence1>;
3 U/ @, k) k$ G! g) y& r' a elseif <condition> then' G* M# }$ C4 T' Z+ U! n$ t9 _
<statement sequence2>;
5 s9 O+ x# {, o- X else , _, T, \5 W) N# O8 M; x/ p2 r
<statement sequence3>;. w* I0 _3 X6 }
end;# I' Q/ f. a! `* D5 n* T# _
如果分支比较多，用：
; c6 h w& s; s ?' i8 _ inspect <expression>: [) V- \$ {! ~
when <constant_list> then+ O$ o2 F3 K: t+ [' X( y/ ~3 T
<statement sequence1>;
) R$ }8 Y) |8 m: }$ @ when <constant_list> then
; n2 \6 g( R9 E7 |7 r <statement sequence2>;
: D- R% S8 `8 h2 L/ b) [1 d ...
( @+ D" S' ^5 W0 A1 i else
) M5 A; \4 Q& I* N; i4 N. T <statement sequence3>;
% w/ i6 X* {! u: y+ Xend;; I( |% E% Y& K2 J+ F3 v
3 q: D5 x; I+ w$ J5 F2循环语句. B$ r# N, H& y) X% K/ O/ ~: i
(1) from <statement sequence1>1 q2 G2 Q% T6 q, o
until <condition> loop% ]/ h/ l7 V$ @1 a1 J2 W% S5 i# O
<statement sequence2>;
]: Z: U: n, X& D! _2 C end;
) E8 E& y1 _! L- K! m9 U1 K! ^9 p (2) while <condition> loop
; w+ d* J. a } <statement sequence1>;
3 W# e# X- F) {: V end;
4 ~, y+ I% B0 W: O3 N (3) repeat
7 |( U" i0 [8 E1 z <statement sequence1>;
, |+ D) `7 T3 ^6 ?5 v q until <condition>;
5 v5 l: E% i- ^1 Q7 U5 `* G (4) for <condition> to <condition> loop
% M% l M! l" S: r% a# X: ? <statement sequence1>;9 s0 s! k! h( @6 O- Y
next;
C: {1 h, w8 T, E0 J" @4 Y) V% [3中断语句
' G! p# h- `0 p6 {: V) [1 Y waituntil <condition> prio <integer expression>;
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以上为常用的函数！3 ]5 k9 C0 y E( [8 t$ Z0 H
还有很多，如有需要我把资料发到你邮箱里 / t1 v; I* \9 Z0 O; K2 s& _
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