?? 14-25.txt
字號:
/* 范例:14-25 */
#include <iostream.h>
class B
{
public:
int a;
int b;
B():a(10),b(20){}
};
class A
{
public:
int c;
B *d;
A():c(30),d(new B){}
A(int x){}
~A(){delete d;}
};
void main()
{
A *ptr;
ptr = new A;
A obj2(33);
obj2 = *ptr;
cout<<"delete前\n";
cout<<"obj2.c="<<obj2.c<<"\tobj2.d->a="<<obj2.d->a \
<<"\tobj2.d->b="<<obj2.d->b<<endl;
delete ptr;
cout<<"delete后\n";
cout<<"obj2.c="<<obj2.c<<"\tobj2.d->a="<<obj2.d->a \
<<"\tobj2.d->b="<<obj2.d->b<<endl;
getchar();
}
程序執行結果:
delete前
obj2.c=30 obj2.d->a=10 obj2.d->b=20
delete后
obj2.c=30 obj2.d->a=6815944 obj2.d->b=6815944
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