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发表于 2012-11-13 08:48:12
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1判断语句) U5 ~7 S2 M) _. c
if <condition> then$ T) d8 ^5 @) {3 r1 l# u9 @
<statement sequence1>;
" ^( G" o5 x3 J8 f! U! A! c elseif <condition> then
' e1 z* C \3 G* r( o! G% T; `6 t <statement sequence2>;! ]6 r$ S# y. a% x' s g
else : q; B; N* o9 l' [/ H4 F, y: y
<statement sequence3>;
$ j! s7 n& G' F7 t6 Y+ W) P! j end;
* o& W5 z) I. {+ f如果分支比较多，用：
: ~: u/ R0 @3 u! ]9 O inspect <expression>
( R$ P1 w% R1 `2 z6 }7 H when <constant_list> then0 V- j$ O. ]2 F" b5 d3 g
<statement sequence1>;& F/ m3 Z+ I; _. P" h) e4 y
when <constant_list> then
5 o! T( A- t1 m6 u$ M <statement sequence2>;$ `+ ~; Q) X1 h+ v4 T
...* o+ e" B. ~+ H6 U* Y* Z1 p0 X a' P
else
5 R6 H! V' C+ P! z <statement sequence3>;
& K, C J' q$ A5 U$ P) G% f$ kend;% |1 x- m" l. k( Z. S, P
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2循环语句
% p5 W0 W C) C/ P: i (1) from <statement sequence1>" d& k6 }1 h5 ~9 [3 L4 V
until <condition> loop
/ @1 f2 B8 h/ s% S <statement sequence2>;" W2 B2 i9 D: W# {
end;
: _2 J9 S/ U0 u% [" F) l (2) while <condition> loop
3 Y/ m1 D# A% ~$ E. j <statement sequence1>;
7 U, s; E+ b2 R8 a end;( c, v$ J" }4 h1 \* W+ G! s
(3) repeat
, G4 S7 J& y" p3 w! D s3 V5 d5 B <statement sequence1>;: \+ P* { w4 X/ Y
until <condition>;8 w5 P' j8 P2 ?
(4) for <condition> to <condition> loop7 K& `6 ]# Q* l# @
<statement sequence1>;
1 Q5 c; H7 R; t$ L next;
# Q# w- R% v. |( o& U9 W8 m. y' ~2 x3中断语句/ j4 L# `, h1 B3 U
waituntil <condition> prio <integer expression>;
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以上为常用的函数！
- p& i- ^4 ]3 t7 Y) V还有很多，如有需要我把资料发到你邮箱里 ; @6 i5 r# C. l5 e7 x
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