using namespace std;

#include<iostream>
#include <conio.h>
#include <iomanip>

// Definition of Customer class
class Customer{      
      

      friend ostream& operator << (ostream& ,Customer);  // Decarlation of output stream overloading function
      friend istream& operator >> (istream& ,Customer&); // Decarlation of output stream overloading function

      private:
              char name[30];
              int custID;
              double spending;
              double tax;
              double discount;
              

      public:
             Customer();                              //Default constructor
             Customer(char[], int, double);           //Parameterized constructor
             
             /*Setter and getter functions for the class*/

             char* getName();
             int getID();
             double getSpending();
             double getTax();
             double getDiscount();
             double getBill();                   
                   };


// Default constructor Definition
Customer::Customer()
 {
      strcpy(name, "No Name");
      custID = 0;
      spending = tax = discount = 0;
       }              


char* Customer :: getName()  // getName() returns the name of the Customer
 {
      return name;
      }
      

int Customer :: getID()  // Returns ID of the Customer
 {
       return custID;
       }


double Customer :: getSpending()  // returns spending by the Customer
 {
       return spending;
       }


double Customer :: getTax() // getTax() returns the tax based on spending by Customer
 {
       double Tax;

       if(spending <= 5000)
        {
        Tax = spending * 5 / 100;
        }
      
       if(spending > 5000 && spending <=10000)
        {
        Tax = spending * 10 / 100;
        }
        
       else 
        {
        Tax = spending * 15 / 100;
        }

       return Tax;
     }
     
       
double Customer :: getDiscount()  // This function returns total discount on spending 
 {
       double Discount;
       if(spending <= 5000)
        {
        Discount = spending * 1 / 100;
         }
      

       if(spending > 5000 && spending <=10000)
        {
        Discount = spending * 2 / 100;
         }
        
     else 
        {
        Discount = spending * 3 / 100;
        }

      return Discount;
     }




double Customer :: getBill()   //This function returns the total bill by adding the tax and subtracting the discount amounts
 {
    return (spending + getTax() - getDiscount());  
       }




/*Definition of output stream overloading function
Whenever << operator will be used with an object of class Customer, information about Customer's name, 
ID, spending, tax, discount and total bill will be displayed on output*/
ostream& operator << (ostream& output, Customer Cust) 
 {
 
         output << endl << endl;
         output << "**************************Customer Billing Information ************************* " <<endl;
         output << "Name " << setw(15) <<setfill('*') << " " << Cust.name << endl;
         output << "ID   " << setw(15) <<setfill('*') << " " << Cust.custID << endl;
         output << "Spending " << setw(15) <<setfill('*') << " " << Cust.spending << endl;
         output << "Tax   " << setw(15) <<setfill('*') << " " << Cust.getTax() << endl;
         output << "Discount " << setw(15) <<setfill('*') << " " << Cust.getDiscount() << endl;
         output << "Total " << setw(15) <<setfill('*') << " " << Cust.getBill() << endl;
         return output;
         }



/*Definition of input stream overloading function
Whenever >> operator will be used with an object of class Customer, information about Customer's name, 
ID and spending will be taken from the user*/
istream& operator >> (istream& input, Customer& Cust)
 {
      cout << "Enter name of the customer : ";
      gets(Cust.name);
      cout << "Enter ID of the customer : ";
      cin >> Cust.custID;
      cout << "Enter total spending by customer : ";
      cin >> Cust.spending;
      return input;   
         
         } 

main()
{
    Customer obj;     //createing an object of Customer class
    cin >> obj;       // Overloaded input stream operator >> is called here
    cout << obj;      // Overloaded output stream operator << is called here

      getch();  
}