gistfile1.cpp

#include <iostream>

using namespace std;

class Employee
{
	private:
	  int e_no;
	  char e_name[30];
	  float basic_sal;
	  float all_allowances;
	  float i_tax;
	  float net_sal;

	public:
	  void read();
	  void calcNetSalary();
	  void display();
	  int getnum();
};

void Employee::read()
{
	cout<<"\nEnter employee details:\n";
	cout<<"\nEmployee number: ";
	cin>>e_no;
	cout<<"\nName: ";
	cin>>e_name;
	cout<<"\nBasic salary: ";
	cin>>basic_sal;
}
void Employee::calcNetSalary()
{
	all_allowances = 1.23 * basic_sal;
	i_tax = 0.30 * (basic_sal + all_allowances);
	net_sal = basic_sal + all_allowances - i_tax;
}
void Employee::display()
{
	cout.precision(4);
	cout.setf(ios::right);
	cout<<e_no;
	cout.width(15);
	cout<<e_name;
	cout.width(15);
	cout<<basic_sal;
	cout.width(15);
	cout<<all_allowances;
	cout.width(15);
	cout<<i_tax;
	cout.width(15);
	cout<<net_sal<<endl;
}

int Employee::getnum()
{
	return e_no;
}

int main()
{
	int n;
	Employee e[20];

	cout<<"\nEnter the number of employees: ";
	cin>>n;

	for(int i=0; i<n; i++)
	{
		e[i].read();
		for (int j=0; j<i; j++)
		{
			if(e[i].getnum() == e[j].getnum())
			{
				cout<<"\nEmployee number already exists! Please enter details again.";
				i--;
			}

		}
		
	}
	cout<<"\nEmployee details are:\n";
	cout<<"E_NO\t  NAME\t\t BASIC\t\t DA\t\t IT\t NET SALARY\n";
	for (int i=0; i<n; i++)
	{
		e[i].calcNetSalary();
		e[i].display();
	}

	return 0;
}