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发表于 2012-11-13 08:48:12
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1判断语句5 g5 G# L5 U$ D4 n: G5 h
if <condition> then
3 n& @7 l2 j. j/ Z <statement sequence1>;
* H/ s. p: X, e$ ^3 @ elseif <condition> then
. a; z/ m9 B* [0 b6 @ <statement sequence2>;
4 C {0 E8 _) c2 }* f) m7 [/ ` else
0 b/ U: {( B7 c/ y: { <statement sequence3>;
% O w/ q) d* T- H8 ] end;4 c) y ^( w! @, i) Q! U
如果分支比较多，用：
# e1 @1 n- _2 M7 E) g2 K inspect <expression>3 m; M: u* `; g
when <constant_list> then
" X( T, m* z$ D# } m9 v% B <statement sequence1>;
3 {8 U2 q# v4 C1 W( b when <constant_list> then
. ?" J$ B& A H" G1 T <statement sequence2>;0 d& `2 p0 q( E+ G" @
...
- K) }! F' k- p, ?8 p& b7 h- n- V+ u else
; D0 P6 ~+ ~) f- P( J <statement sequence3>;6 _, t8 V: D3 {8 S2 e- B0 K, M( F4 m
end;# y, u, u* P( }! U. }
5 D& l3 _# }! X4 o' Z1 d8 t! i2循环语句
0 e0 c8 h+ k( K (1) from <statement sequence1>
. ]8 ?! @7 o. W) C( }' r8 b. I until <condition> loop8 Y( l' c. b8 @
<statement sequence2>;0 z2 U2 z0 H. X* }! Y
end;# N0 ~$ K) S. l$ @: [: i
(2) while <condition> loop, M, @1 U: V, \7 t
<statement sequence1>;; B& z/ ?: M7 H
end;$ `$ l' W; t' W" I( g+ L
(3) repeat
% j* O5 H/ Y# l( v5 K <statement sequence1>;0 l% J& a5 k, a6 \" S
until <condition>;
, ]/ E8 P1 r) e4 A. e" \4 a+ h# Q (4) for <condition> to <condition> loop
- e5 Z7 U! w8 L2 T <statement sequence1>;
# m6 V3 Q& P6 n2 Y+ g& ]% ]2 Y next;
8 @1 ?% j a9 b$ @3中断语句
7 n" B* \. j7 j. ]9 B waituntil <condition> prio <integer expression>;1 j7 Y( _# L# I8 u& Y6 Y* a, D- W5 b
3 z5 }* r% T. u% |, d2 m
% n: w) c% W& i( N% _0 G0 m以上为常用的函数！
% ~3 h" [8 \: p/ n! y0 Z还有很多，如有需要我把资料发到你邮箱里
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