Operator overloading question

[Tampopo]

I had a question about the output of this code..

Shouldn't the output be both $1050. Instead of 1st output $1300 and 2nd output $650.. Or my logic is wrong in any way? I thought it overload the "+" so they will be able to 'recognise' what to add together if we do "clerk + driver"

#include <iostream>

using namespace std;

class Employee
{
  private:
    int idNum;
    double salary;
  public:
    Employee(int, double);
    double addTwo(Employee);
    double operator+(Employee);
};

Employee::Employee(int num, double sal)
{
  idNum= num;
  salary = sal;
}

double Employee::operator+(Employee emp)
{
  double total;
  total = total + emp.salary;
  return total;
}

int main()
{
  Employee clerk(1234, 400.00);
  Employee driver(3456, 650.00);
  double sum;
  sum = clerk.operator+(driver);
  cout<<"Using operator+() function = Sum is $"<<sum<<endl;
  sum = clerk + driver;
  cout<<"Using + operator = Sum is $"<<sum<<endl;
}

[hamsterman]

Notice how your operator + does not involve this->salary at all. total is garbage. Fix the operator and you'll be fine.

[Tampopo]

sorry i dun get what u mean, can elaborate on it..?

[davidcpp]

you didn't initialize your total with 0, so your total contains garbage !!
and also instead of your code, you can write

double Employee::operator+(Employee emp)
{
return salary + emp.salary ;
}