对象数组（带参数、不带参数各自应用）

#include<iostream>
using namespace std;
class exam{
	public:
		exam(int a)
		{
			n=a;
		}
		exam()
		{
			n=123;
		}
		int get()
		{
			return n;
		}
	private:
		int n;
}; 
int main()
{
	exam a[4]={11,22,33,44};
	for(int i=0;i<4;i++)
	{
		cout<<a[i].get()<<" "<<endl;
	}
	
	exam b[4]={1,22};
	for(int i=0;i<4;i++)
	{
		cout<<b[i].get()<<" "<<endl;
	}
	return 0;
}

结果：
11
22
33
44
1
22
123
123

Process exited after 0.02601 seconds with return value 0
请按任意键继续. . .