3、实例化一个子类对象的内存分配情况？（不能少于200字）

#include<iostream>
using namespace std;

class Contain
{
public:
class Embed
{
public:
Embed()
{
ival = 0;
}
int ival;
} emb;
void show_emb()
{
cout<<" sizeof(emb) = "<<sizeof(emb)<<endl;
cout<<" the address of emb = "<<&emb<<endl;
}
};

int main()
{
Contain con;
con.show_emb();

return 0;
}