class problem

[Olpers]

I have written this program ..Although compiler is telling the problem but i could not identify what problem is present.

#include<iostream>
#include<string>
using namespace std;
/////////////////////////////
class publication
{
	protected :
			float price;
			string title; 
		
		
	public :
		
		publication(float p , string t)
		{
			price = p;
			title = t;
			
			
		}
		
		
		void getdata()
		{
			cout << "Enter Price:" ;
			cin >> price;
			
			cout << "Enter title:";
			getline(cin,title);
				
		}
		
		void putdata()
		{
			cout << "Price is \n"<< price;
			cout <<"tile is \n" << title;
		}
};

/////////////////////////
class book : public publication 
{
	protected :
			int pcount;
	
	public :
		
		void getdata() 
		{
			cout <<"Enter page count";
			cin >> pcount;  
			
		}
		
		void putdata()
		{
			cout << "page count is \n " << pcount;
		}
	
	book(float price , string title , int pc) : publication(price,title)
	{
		pcount = pc;
		
		
	}
	
	
};
/////////////////////
class tape : public publication 
{
	
	
	protected :
			int play_time;
	
	public :
	void getdata()
		{
			cout << "enter play time" ;
			cin >> play_time;
			
		}
		
		void putdata()
		{
			cout << "The play time is "<< play_time;
			
		}	
	tape(float price , string title , int pt) : publication (price,title)
	{
		play_time = pt;
		
		
	}
	
	
};


///////////////////////






int main()
{
	book b;
	tape t;
	
	cout << "Book \n";
	b.publication ::getdata();
	b.book ::getdata();
	
	
	cout << "Tape\n";
	t.publication :: getdata();
	t.tape ::getdata();
	
	
	cout <<"Data is as Follows \n";
	b.publication::putdata();
	b.book :: putdata();
	t.publication :: putdata();
	t.tape :: putdata();
	 
	
	
	cin.get();
	return 0;	
}  

[JockX]

One problem is that you created custom constructor for class
book::book(float price , string title , int pc), but in main(), line 110 you are calling nonexistent book::book();
Since you provided custom constructor, no default is autogenerated, so you must provide it yourself. The same is the case for tape.