61.析构函数和delete运算符搭配使用

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delete会自动调用析构函数来释放new创建的空间
* w% M9 D2 ^6 s! D, T! g#include <iostream>
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using namespace std;

& B- s" ^! D/ n9 Gclass CA
{
public:
        CA();
        ~CA();

. A% ^$ ^9 T1 e8 ]. Q* bprivate:

7 s" Z9 v; u% a6 v};

CA::CA()
{
: C) r8 L4 |- H0 H* z3 X        cout<<"构造函数在执行..."<<endl;
}

CA::~CA()
. b4 R) M6 l1 z5 [4 \- X$ e, p{
8 Z5 x  k, {* w6 s( {7 C        cout<<"析构函数在执行..."<<endl;
! l# W5 r* ?6 P( O+ U4 m/ d}

& a2 q  L9 _- v4 T$ yint main(void)
{
" C% C/ ]% W+ f6 {6 P7 N        CA *p=new CA;
        delete p;

        return 0;
; r! n& Z* O7 C0 ?3 T: g}
" R6 H4 x7 v! Z9 w+ H3 \: C3 ]