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#include <iostream>
using namespace std;
 
const size = 50;
 
template <class T>
 
class arr
{
	public:
	T a[size];
 
	arr()
	{
		int i;
		for(i=0;i<size;i++)
		{
			a[i] = i;
		}
	}
	void put(T z , int i)
	{
		a[i] = z;
	}
	T get(int i)
	{
		return a[i];
	}
};
 
int main()
{
	arr<int> obj1;
	arr<float> obj2;
 
	obj1.put(5,10);
	cout<<obj1.get(10)<<endl;
 
	obj2.put(3.5 , 5);
	cout<<obj2.get(5)<<endl;
 
	return 0;
}

prog.cpp:4:7: error: 'size' does not name a type
 const size = 50;
       ^
prog.cpp:11:6: error: 'size' was not declared in this scope
  T a[size];
      ^
prog.cpp: In constructor 'arr<T>::arr()':
prog.cpp:16:13: error: 'size' was not declared in this scope
   for(i=0;i<size;i++)
             ^
prog.cpp:18:4: error: 'a' was not declared in this scope
    a[i] = i;
    ^
prog.cpp: In member function 'void arr<T>::put(T, int)':
prog.cpp:23:3: error: 'a' was not declared in this scope
   a[i] = z;
   ^
prog.cpp: In member function 'T arr<T>::get(int)':
prog.cpp:27:10: error: 'a' was not declared in this scope
   return a[i];
          ^

Standard output is empty