定义数组对象以后，对数组中的对象初始化的方式分为两种：

一种方式是在定义的时候用列表初始化

A a[5] = {A(1),A(2),A(3),A(4),A(5)};

	A b[5];
	b[0] = A(1);
	b[1] = A(2);
	b[2] = A(3);
	b[3] = A(4);
	b[4] = A(5);

通过构造函数和析构函数可以看出来：

#include<iostream>
using namespace std;
class A
{
	public:
		A(int n=0)
		{
			i = n;
			cout<<"================>constructor :"<<i<<endl;;
		}
		~A()
		{
			cout<<"================>destructor :"<<i<<endl;;
		}
	private:
		int i;
};
int main()
{
	cout<<"=============start test one=============="<<endl;
	A a[5] = {A(1),A(2),A(3),A(4),A(5)};
	cout<<"=============end test one================"<<endl<<endl;
	cout<<"============start test two================"<<endl;
	A b[5];
	b[0] = A(1);
	b[1] = A(2);
	b[2] = A(3);
	b[3] = A(4);
	b[4] = A(5);
	cout<<"==============end test two================="<<endl; 
	return 0;
}

C++数组对象和构造函数