simple program using classes objects and constructor (OOP) (51)

#include<iostream>

#include<string>

using namespace std;

class Invoice //here we make a class of name invoice

{

public: //this is the public part of the class

//here we declare the six data members 

string part_number;   

string description;

int item_quantity,item_price;

double value_addedtex;

double discount;

int tex;

Invoice() //this is the default constructure

{

value_addedtex=0.20;

discount=0;

part_number="";

description="";

item_quantity=0;

item_price=0;

}

Invoice(string x, string y,int u, int z ) //this is parameterized constructure

{

value_addedtex=0.20;

discount=0;

part_number=x;

description=y;

item_quantity=u;

item_price=z;

}

double getInvoiceAmount()

{

double amount;

tex=value_addedtex*item_price/100;

amount=item_quantity*item_price+tex-discount;

return amount;

}

};

int main()

{

string x,y;

int u,z;

Invoice no;

cout<<"please enter the part number";

cin>>x;

cout<<"please enter the part number";

cin>>y;

cout<<"please enter the part number";

cin>>u;

cout<<"please enter the part number";

cin>>z;

Invoice nu(x,y,u,z);

cout<<"tex in RS"<<nu.tex;

cout<<"amount will be:"<<nu.getInvoiceAmount()<<endl;

}