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发表于 2012-11-13 08:48:12
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1判断语句- L1 J+ S# C* o" P1 }7 h* ~
if <condition> then
8 o2 Q* e p' H+ f3 J <statement sequence1>;" t6 k; Y8 Q' D+ R0 o! I" f1 a
elseif <condition> then
8 t3 k$ y! | @% `1 F9 g1 a$ d <statement sequence2>;
- x( ]& S" h+ N5 e1 a else
7 k4 l4 o, W. p: D$ j5 u <statement sequence3>;
; G. w8 }! k2 h8 \0 ?9 I end;
* b! B: Y+ B8 l! i. g5 ^+ Z如果分支比较多，用：
1 l7 U2 F, l5 g/ T+ Y; _9 l inspect <expression>
. Y! ^ n) V3 \* y! I) [8 P when <constant_list> then; _3 Y7 Q C8 ^1 F' g, g. U# P+ {1 K
<statement sequence1>;
* U2 f# n; M/ E when <constant_list> then
& j N7 |0 [$ L <statement sequence2>;
2 m. ~+ c1 p( l$ C; U1 n- m% L: O' I+ J ...
1 C2 |6 |" ~1 j t4 G else. q! i( w% e2 b0 h
<statement sequence3>;
: A# L8 \" T$ k) c- Q1 Z' v; b5 gend;( |/ U+ J8 t! {$ _0 t
# l: x- {/ G: x) O0 \6 F2循环语句4 n8 V5 j. F1 `: ?$ Z5 z5 x/ ]
(1) from <statement sequence1>
- V& f6 m1 z$ x until <condition> loop2 |8 J: Q' U o
<statement sequence2>;
# N P) ^' O* @& L' Q end;' Y( R2 `6 I4 F7 {* }, }: w& |
(2) while <condition> loop! e/ l; e5 z( }: V3 ?' A
<statement sequence1>;
0 O5 I2 a3 y+ o. N end;
" @) `! z2 t. w7 w4 h (3) repeat
9 P! {2 o. e' C" v <statement sequence1>;
0 T' r3 ^6 |* i until <condition>;5 \: B; i& I& r, ^4 |6 b- y
(4) for <condition> to <condition> loop
! A3 s [4 @3 c, d6 V3 B& s <statement sequence1>;
3 V+ {7 \2 T- g5 P) O next;; G% G8 j6 \- ^! ~0 x
3中断语句
7 u/ U4 H) S* Z* b, g L waituntil <condition> prio <integer expression>;
# y+ M! e+ N8 d2 k, O& D
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t* C1 k5 C/ V) f1 I以上为常用的函数！
' O& _+ y6 s8 _" z1 a还有很多，如有需要我把资料发到你邮箱里 $ A, Q4 \ ^' r
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