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发表于 2012-11-13 08:48:12
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1判断语句. d! Y% D. v# `, T5 o+ D. B% }
if <condition> then( i$ F4 M/ x- \/ J& D3 `. L
<statement sequence1>;
: s, m/ R! ~0 } elseif <condition> then4 \! T1 M5 z* I0 c! l% f- A0 D( B
<statement sequence2>;# E# H" W' l% _! r% ?8 z) H
else / C& q+ V! u/ \, W+ a2 f* x
<statement sequence3>;
8 y/ u- u/ S$ M; Y end;
& _9 _$ U4 u& N4 d) S: D如果分支比较多，用：
$ |) e2 F% J# a) Q9 C+ Z inspect <expression>
' a: h/ p T3 \: o3 O+ ? when <constant_list> then
% O5 \- a8 o' v8 Q0 p( \ <statement sequence1>;
+ {/ L5 ~# C7 e7 \ when <constant_list> then
3 E5 r; v7 |2 m* y+ H. E <statement sequence2>;
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else
1 y+ B0 l6 I( s# `2 G <statement sequence3>;9 ?0 x( Q' |) t! p6 Y8 T5 P
end;; j- T0 J& }% t; E3 F
" v0 t& L9 w' j4 S- v2循环语句, P; {4 n4 x9 f8 z
(1) from <statement sequence1>
9 W9 k! T r* t. A until <condition> loop
2 E! q4 {' n* o6 Q: j/ A5 k4 I <statement sequence2>;/ C( [/ k) V6 p* y, S1 ^- }
end;* i8 j7 l- \: q4 A4 t
(2) while <condition> loop
6 `8 c! K/ m( d9 q, m c0 t5 b, } <statement sequence1>;
' P- @% O) s: S- G# t end;
& N& W& m5 q7 l8 S# m2 p, ] (3) repeat
: I. @% |5 J4 W6 F <statement sequence1>;
7 E- [+ ^5 Y2 g9 F" l' Y6 K until <condition>;! s8 t9 e, a1 X. p1 Q' x
(4) for <condition> to <condition> loop
$ r0 D% _ Q4 w. p: n& ]7 L* | <statement sequence1>;6 x' E( _2 A( _1 W. e, K$ w m
next;
, _- w# y' ]: m$ Z, S) B, x1 R3中断语句" b3 V- X8 L0 }# f9 P
waituntil <condition> prio <integer expression>;
+ U h. D, K: T0 r
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9 `8 o3 `0 O' Z) o4 q, f+ i以上为常用的函数！
. e0 G4 A8 O1 x还有很多，如有需要我把资料发到你邮箱里 # q2 Z, T, }( o8 [/ k: L
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