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发表于 2012-11-13 08:48:12
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1判断语句# L. V+ i# W% d1 h6 Y
if <condition> then
1 ?8 d( o) o @ <statement sequence1>;, `& y" H5 ]( H. n- d4 l
elseif <condition> then$ G# ^5 i8 f4 p/ C8 }' B
<statement sequence2>;# o% D, {$ |( Z7 \0 G% z/ I
else 9 ^ A) |& N, @$ _+ D
<statement sequence3>;$ w) B0 `. d& f/ G+ q
end;
, f. N1 Y' T+ q. G& b如果分支比较多，用：
" m* c8 ^0 ]% G* M" C inspect <expression>
$ r: k' O1 f7 R* z" I0 c when <constant_list> then
) `( r- i. b3 s6 O! m <statement sequence1>;
: K% l1 T; D; A6 W- b when <constant_list> then4 B# ]% }, ]: w4 N: I/ L
<statement sequence2>;9 x' S/ ^. l4 C
...
; i+ c S& w7 {9 } else# R2 S5 k* \% v( X8 {
<statement sequence3>;! x7 m: f9 ^' X: q
end;* |( N @' r: w% |. S- L5 y
) @4 e2 B. e- M" x' R% c. y2循环语句5 z @* B. s8 f2 d
(1) from <statement sequence1>/ Q% w( s5 W* Q% v
until <condition> loop' W8 |* z2 {. u9 E: M1 M3 j
<statement sequence2>;
5 ]4 }% x8 W; D' l end;+ l7 @) ~. \4 N- l
(2) while <condition> loop1 U4 e- p5 `. h0 m# b' }( E% d
<statement sequence1>;' @7 K" L T4 m6 `1 p
end;, ?' x8 W9 o# t% U; V
(3) repeat * b( l8 ?, M. G1 Q1 `
<statement sequence1>;
( O$ z. K" d0 Z$ Z until <condition>;. ^. O5 k" r) B5 [ ^
(4) for <condition> to <condition> loop
* W: _4 K6 `2 B, j* k; d <statement sequence1>;
/ l# b% s' L; l; J next;4 B+ L- j& `6 R, J# n9 N% j
3中断语句
+ L, F! Q$ }* r waituntil <condition> prio <integer expression>;
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( j$ r6 \0 \( J6 ]& i3 y以上为常用的函数！
5 v" D+ N! O! C8 o8 N还有很多，如有需要我把资料发到你邮箱里 ; C' `% o [ e/ Y. ?$ l! P
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