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发表于 2012-11-13 08:48:12
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1判断语句9 w6 m2 l* E; b8 Z: n% m
if <condition> then
, i6 ?. J8 U- E1 {8 Y: w+ d$ X+ F <statement sequence1>;6 [3 N6 n' w$ k8 \; V( j
elseif <condition> then
+ J2 Q' x) _% v <statement sequence2>;5 {2 b2 `% q# v. y3 U
else
1 E$ |8 C# I) [. D; V2 X! Y <statement sequence3>;! [( c3 j p. b
end;
6 N* ?* d# C4 f& C3 t如果分支比较多，用：
$ C9 a8 r L8 ~# J9 H6 n4 f inspect <expression>
# M# R. e4 F& q/ W( }1 ^ when <constant_list> then3 o1 Z/ s" x6 v4 {
<statement sequence1>;
% [: h& A' D4 }# O D ]% R when <constant_list> then) b- W, f/ j' f
<statement sequence2>;' H/ Q3 j% `* d% y
...& n2 Y, X% j6 m: G* ~
else6 b/ g z. F# e; `" G- o% u2 Q, m
<statement sequence3>;
: V) [5 m& [5 b, h( I% ~end;
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5 w9 K0 d: t5 r3 |8 F0 l8 ~! r2循环语句/ N; o. E2 \: A
(1) from <statement sequence1>
0 }' L+ {# G: X: G3 t" {1 f Q0 m) w until <condition> loop
( f# X2 S5 K# [) ?* z( [, a0 i6 g: L <statement sequence2>;8 m% `' \4 f1 X @! H/ U% u
end;3 w% v. g! d0 m1 J8 W# Z) _( D8 o
(2) while <condition> loop
; N6 Q* j/ {! |7 I& j <statement sequence1>;. U+ h, \! C/ x4 S+ W
end;
7 H2 L$ T$ \2 E# P5 e (3) repeat
( ~5 F! Q$ C4 g0 C' Z& A% i- _ <statement sequence1>;
! L4 [+ B# ]! C. M! N2 W until <condition>;: u/ A7 @$ e* m& m& B
(4) for <condition> to <condition> loop
* y& A3 [+ ]' u2 o x) N2 x4 n <statement sequence1>;
5 C; Y+ @3 y1 q. _& K next;' }3 a- h N* H" f8 [; `0 N7 {
3中断语句
, v; W7 Y9 @3 Z6 s; M9 t waituntil <condition> prio <integer expression>;
2 m7 f( }4 m' ^* `0 p5 m
0 |3 L$ i" L O# a- y% o7 M. |7 r6 Z! j
以上为常用的函数！
& U* y j; B: u% u7 z% n1 B还有很多，如有需要我把资料发到你邮箱里 9 R" G. B# [$ l. y" j! ^: T
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