Constructor for Multiple Object in C++

Program 1

// Test Constructor for multiple Object
#include<iostream>
#define clrscr() system("cls")
using namespace std;

class Test
{   
     int n;
      public:
      Test()
      {
         cout<<" I am constructor\n";
         n=10;
      }
      void incr()
      {
        ++n;
      }
      void display()
      {
        cout<<n;
      }
};
int main()
{
     clrscr();
     Test T1,*T2;
     T2=&T1;
     T1.incr();
     T1.incr();
     T2->display();
    return 0;
}