crt detected that the application wrote to memory after end of heap buffer

void evenValue()
{

	cout<<endl<<"                  * * * WELCOME * * *"<<endl<<endl;
	cout<<"How many elements do you want to enter to queue: ";

	int length1,i,element1; //=====================  // My queue 
	queues q1;
	cin>>length1;
	cout<<"Enter "<<length1<<" elements: ";
	for(i=0;i<length1;i++)
	{
		cin>>element1;
		q1.insert_rear(element1);
	}
	//==========================================================================================================
int element;
int count = 0;
   		for(int ptr=q1.front;ptr<=q1.rear;ptr++)
			{	
				if(q1.queue[ptr]%2==0)
					count++;
	        }
	      //=====================  // My stack 
//	int length,element;
  //  cout<<"Enter many item do you want to fill the stack"<<endl;
    //cin>> length;
	
    My_Stack s1(count); 
  //  int * x;
  //  x = new int [count];

   cout << "Pushing elements " << endl;
    for (int i = 0; i < count; i++)
	 {  
		 for(int ptr=0; ptr < q1.Size();ptr++)
			{	
				if(q1.queue[ptr]%2==0)
				{
				element = q1.queue[ptr];
				s1.push(element);
			//	cout<<s.items[ptr]<<"    ";
				}
				}
	}
    	s1.display(s1);}