Dynamic array of object

// dynamic array of object
#include<iostream>
using namespace std;

class abc
{	
	int roll;
	char name[10];
	
	public:
		void set()
		{
			cout<<"Enter your roll no :";
			cin>>roll;
			cout<<"Enter your name  :";
			cin>>name;
		}
		void get()
		{
			cout<<"your name is :"<<name<<"\n";
			cout<<"your roll is "<<roll<<"\n";
		}
};

int main()
{
	int n;
	cout<<"Enter object size :";
	cin>>n;
	abc z[n];
	int i;
	
	for(i=0; i<n; i++)	
	{
		z[i].set();
	}	
	cout<<"\n out put \n";	
	for(i=0; i<n; i++)
	{
		z[i].get();
	}
}

Enter object size :3
Enter your roll no :1
Enter your name  :biku
Enter your roll no :2
Enter your name  :sunil
Enter your roll no :3
Enter your name  :montu

 out put 
your name is :biku
your roll is 1
your name is :sunil
your roll is 2
your name is :montu
your roll is 3