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发表于 2012-11-13 08:48:12
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显示全部楼层
1判断语句
6 H, u% C* x6 X, W9 ~9 ^/ H if <condition> then/ F4 N' }2 d- _3 w7 |1 W
<statement sequence1>;
" a" K& ~8 O D& T9 H7 h elseif <condition> then
9 T# t. [$ X7 s9 p( ~, _+ A$ p0 X <statement sequence2>;
% { K: ]/ l7 @: J else
) o. ~+ W6 M* d" G* X. n# R/ B <statement sequence3>;0 E3 \4 ]4 _& h& M3 n( @
end;
: ]0 X2 e0 N8 [" F1 |9 i9 e如果分支比较多,用:
6 U/ V( z0 K& e/ c( z1 l inspect <expression>0 h0 B. J3 f* n5 W
when <constant_list> then1 J$ |. g& k, D( ~* g5 p# T+ R
<statement sequence1>;- T# y, ~3 [9 P, @4 T
when <constant_list> then8 u* O: m+ I% d! D& R
<statement sequence2>;) v8 V7 L' r7 ]$ ^
...
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<statement sequence3>;
1 T- l9 X+ _# O2 c1 v- qend;' J5 _; F7 a. k4 p( t4 E$ ^: u' _
9 {2 G, q: Y$ v3 _/ G% B) i2循环语句
4 L- P! T3 v$ L1 X; r) i (1) from <statement sequence1>
0 W; @" Y/ P* ]& j until <condition> loop
' L! K! S' G( I5 L( S# z. [ <statement sequence2>;. c) \7 \( i/ c5 f
end;
* D e* e0 T! M: b! A; r( @, Q (2) while <condition> loop6 V4 W) E ]" r! O' ^+ ], E
<statement sequence1>;) z6 d9 Z6 p! \
end;
6 {$ V8 }6 E. k1 n3 Z (3) repeat
t2 T0 i1 k0 o$ A# K0 |5 ~( J Y <statement sequence1>;
% L- d6 f( _* C! C until <condition>;
( Z2 k8 e, L! |+ a h (4) for <condition> to <condition> loop% ?& A5 G t4 {( G- F1 c4 _2 p% [
<statement sequence1>;
& U8 E& s, u. z& M5 m! ~ next;
* i5 s* K, O/ W, ?3中断语句
. z, }7 p# Y. D9 e T waituntil <condition> prio <integer expression>;
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以上为常用的函数!
$ i5 m+ S3 b- B5 u还有很多,如有需要我把资料发到你邮箱里
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