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发表于 2012-11-13 08:48:12
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1判断语句 D8 [ b5 Q) g0 N+ R) [7 [1 |3 F
if <condition> then
! v0 G6 T8 r4 L& e% g <statement sequence1>;
0 s" j, H7 D T+ r% X" e3 @) A' Q elseif <condition> then
' x, P# d+ {, \, ?; \ <statement sequence2>;
. }2 y3 I2 G" w8 b5 H! ~6 {6 t% r# Q else
* Q7 w+ U/ I$ ^ <statement sequence3>;
- m7 D; ]4 m0 ~$ N' I5 Y end;
3 Y$ G# K2 n0 Z( r如果分支比较多，用：
8 i# |' z: f# l( g inspect <expression>
# v( h5 U) E- Q' O when <constant_list> then% w- ^ u) s9 [( w8 U6 D* H
<statement sequence1>;
- A+ N ^. R w4 v: k when <constant_list> then2 w* [" h! k v& F& b
<statement sequence2>;
# L/ G5 J; b; q+ X, w8 {3 V ...8 R" }- G2 g# M$ q# t5 ^
else/ j k; d- H% H1 ^
<statement sequence3>;
1 ^& W6 T6 I8 _% Gend;8 R7 j, y3 ?4 V( o8 b' e
8 b" ]8 Q% _) X2循环语句" @' n7 o; m# }) H, Z
(1) from <statement sequence1>
/ R2 K& H0 s/ X- m0 j; S until <condition> loop: H8 a4 ]' n3 d5 Q/ i1 n* T i
<statement sequence2>;
: Y- }: `8 f% x6 Z3 o: ? end;8 S0 E0 T/ y4 j) T, r4 Q, H8 J
(2) while <condition> loop9 K" H% F) A4 v* s/ X, }# c4 M
<statement sequence1>;5 q' Y9 ~1 [ z* y: ^
end;: e& e' `/ s2 u+ p* h U
(3) repeat
' f0 @' h1 L" ~* p% M: J <statement sequence1>;
# S4 N$ u$ p; u5 t until <condition>;+ C! e+ ] @' z0 L1 F. f
(4) for <condition> to <condition> loop
9 X) Z' \2 L# k1 _ <statement sequence1>;
0 N! Z# [5 `1 f9 N) g0 @ next;
( v: @$ C p: t" B3中断语句
3 y. t5 H( y$ a: A. b. P: Y+ ` waituntil <condition> prio <integer expression>;' _. J9 X& G$ I# L Q* x
9 n- x* w9 _2 N$ ^; ~* @$ s: q
( D% {0 }* j0 z6 o5 `& ?以上为常用的函数！
; a9 `: ] Y8 D$ x还有很多，如有需要我把资料发到你邮箱里 0 s9 n; p, Z; w. i7 i4 H8 r
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