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发表于 2012-11-13 08:48:12
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1判断语句/ K- @; A8 X+ I# G( e
if <condition> then
% n1 [! Z" X4 O <statement sequence1>;
0 y" @* W2 R) X elseif <condition> then
6 J- ?2 f. W, p, c <statement sequence2>;# D; E) u5 h, Z( a
else 4 ]& N5 o g9 B8 N. D+ j
<statement sequence3>;6 a" W5 q/ Y1 l
end;8 R9 o) H4 x: ` o. ~% Q
如果分支比较多，用：# p. _' m& s& ^" p
inspect <expression>5 P- a: T8 B5 y# @4 ?' n' O" N; h H
when <constant_list> then8 c! `8 S/ \% b c* A
<statement sequence1>;
6 v6 ~) Z0 N* i when <constant_list> then
: K% m$ V4 m! ^! s3 ?) C5 Q <statement sequence2>;
2 x5 Q% f9 b2 B( C1 Q! l ...
* p# }# j: J7 N1 `; t else
! B- ]8 X( O6 T g# [1 J3 m8 U <statement sequence3>;& G% }4 I2 W1 u7 H% a% l
end;- a* N. D7 z+ w6 G _ F* G
5 [# U6 F4 k9 ?+ H& R: A# u2循环语句7 b: A r7 [# `9 b5 W
(1) from <statement sequence1>/ ?* \% {; k- v' e
until <condition> loop
& u3 w7 b" v. a <statement sequence2>;( N, H& Q5 ?/ b+ Z2 I, t2 ~% o
end;' [3 E' V# k7 b% D/ w
(2) while <condition> loop
( \2 |8 v3 o3 } <statement sequence1>;& |3 @( |7 d; N. L Z4 ~
end;
6 |% @6 B% Q! v6 O! q7 t4 g& d (3) repeat * Q# K O8 H6 | D3 _6 L% K
<statement sequence1>;
L' c0 a0 h8 o' } until <condition>;
1 t4 K( T7 A# e6 Z$ q! s3 `+ R. S (4) for <condition> to <condition> loop& K( L l) R4 O ?" u7 _# V) q
<statement sequence1>;9 C4 U& n P, `, M* S8 ^0 {+ p5 h
next;- c2 y/ `; M6 b
3中断语句& G% F3 E# P! l2 e5 Y- s
waituntil <condition> prio <integer expression>;0 z1 e3 I I1 \- z
; @' L. X$ O+ n$ p' Q
! x; l. s2 i( z- O% p; h. C! f以上为常用的函数！
, x+ v" \* F5 B& j( ~) `还有很多，如有需要我把资料发到你邮箱里
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