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发表于 2012-11-13 08:48:12
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1判断语句
" k7 T( Y, v5 F if <condition> then
* y3 v2 ]( [* y/ c$ A. R! e <statement sequence1>;
7 `3 c5 w3 M# v5 q: h elseif <condition> then7 J3 z5 \. h) n! z
<statement sequence2>;5 s7 @4 t* w2 `8 r z+ g0 l: i
else ! F! g7 u( P6 y ?
<statement sequence3>;# W, H; T/ X; B G
end;
) z' ~0 C/ N6 q2 E! K, C9 B如果分支比较多，用：
' ^- _. _3 t) ^" g inspect <expression>) D8 ~" g' [9 V6 f* a
when <constant_list> then {$ }& m( Y9 e( `$ J0 d$ ?, s8 \
<statement sequence1>;
6 s9 S, [* m4 M& C6 ~8 d/ w when <constant_list> then
4 m$ ~6 g, m: M. o) ^ <statement sequence2>;7 F& S. a% {7 O
...# ^$ J$ h4 f1 y' _
else- W0 r( Y6 S! R% S( X; P
<statement sequence3>;
' `! Q, @7 ^0 }9 ]1 g- r- Q Z! q0 y: Cend;* D; F# j: T3 [/ A# R' G6 y
/ a/ L# Q% M" M( }" n0 [' F/ Q2循环语句% p- l$ |8 v2 l8 I
(1) from <statement sequence1>2 A# ?0 N) M, K& Y0 {* q6 K( E9 u
until <condition> loop
" y" Q" u* j( o+ I; ~% m <statement sequence2>;
" l8 L# c& i7 u5 w3 ?" J% _ end;4 q( T* {/ z" f1 J( S; S
(2) while <condition> loop
3 Y! E2 p' ` m) f) E2 s' B <statement sequence1>;
, y, [: C- O7 k q% M end;5 j! d) E) J+ n, ~, N A7 `: U
(3) repeat 0 y8 g0 f: l9 S, P* D8 u
<statement sequence1>;
& C$ u; w: [. {; j {9 ^9 ~4 z until <condition>;
; F0 z3 B b$ L6 ` r. z1 N (4) for <condition> to <condition> loop. L7 z5 I) G: ]! S D
<statement sequence1>;
' E4 A" j* K* |/ b/ H/ d- [ next;
4 L2 q+ C R( T. w3中断语句
- i3 A# @! g" P T waituntil <condition> prio <integer expression>;4 [$ h# F$ T+ Y d" A* i. f& ~
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以上为常用的函数！
' c2 T, ~2 t0 J/ K* G! ~: b还有很多，如有需要我把资料发到你邮箱里
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