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发表于 2012-11-13 08:48:12
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1判断语句, e! e. _; m0 @0 T
if <condition> then
% D y: P n5 z <statement sequence1>;
: [0 p4 t$ H+ ~ elseif <condition> then
K) m1 h" }5 g' l1 K/ c( s <statement sequence2>;
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<statement sequence3>;
% `8 r& b8 E! h% c7 }6 l end;
. a$ i/ Z- n9 d D6 V如果分支比较多，用：
2 v5 U, X8 ~4 X, d/ y( G inspect <expression>
* p5 N* f% t: L5 b( X! N1 E8 C! i when <constant_list> then* e+ {' M8 f p
<statement sequence1>;+ i# P; W& s* P9 G; H
when <constant_list> then& }/ O' I+ Z3 @( H0 @( e: r0 W
<statement sequence2>;
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0 ~7 \& n+ S. X! v9 S* T* Y <statement sequence3>;
: x1 _0 e9 [. qend;& J0 _4 K/ `/ q( B) }# H
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2循环语句9 N9 J e3 Q I9 ~8 A! P, v
(1) from <statement sequence1>" ~7 Z) T+ K# W' Y8 _7 p
until <condition> loop& q* ] E6 Y* H4 l3 Z! \
<statement sequence2>;
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(2) while <condition> loop: A f [+ @$ H6 c' i& O8 ]
<statement sequence1>;: R8 P/ A( |9 ]8 b7 b/ q$ I5 w- O
end;4 G# i. P2 t+ P7 w' n! E
(3) repeat 9 \1 o2 @ E- b/ {
<statement sequence1>;
. v5 A1 Z6 B1 R X/ P8 l# J until <condition>;; O3 e, j* u; E
(4) for <condition> to <condition> loop/ O5 k; b; q" I" S. ~
<statement sequence1>;
& [6 ~- a, l6 S% [0 N/ W/ N next;: }7 u e6 j5 Q V* J2 W
3中断语句' t! r; H7 J1 ^! {9 J3 u$ ?0 h
waituntil <condition> prio <integer expression>;
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以上为常用的函数！0 \- @1 b6 \& `
还有很多，如有需要我把资料发到你邮箱里 P( a* {. r' P6 J1 U! L* c
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