Handling multiple .h and .cpp files

The first .h file is named as "Employee.h"

#include<iostream>

class Employee
{
  public:
    int total=0;
    std::string Name,Id,Address;
    void dummy();
};

The first .cpp file is named as EMployee.cpp

#include "Employee.h"

void Employee::dummy()
{
        std::cout<<"Rohith"<<std::endl;
}

And the main file is named as main.cpp

#include "Employee.h"
int main()
{
 std::cout<<total<<std::endl;
 Employee obj;
 obj.dummy();
}

When executing the above cpp files i am getting an error like this

g++ Employee.cpp main.cpp
main.cpp: In function ‘int main()’:
main.cpp:5:13: error: ‘total’ was not declared in this scope
std::cout<<total<<std::endl;
^~~~~
main.cpp:5:13: note: suggested alternative: ‘strtol’
std::cout<<total<<std::endl;
^~~~~
strtol

Can you help me in this? how can i resolve the above problem.

>Solution :

According to Employee.h, you intend dummy to be a non-static method of class Employee.

In this case you should do the following changes:

1. In Employee.cpp, change the definition of dummy to:

void Employee::dummy()
{
    std::cout<<"Rohith"<<std::endl;
}

Without qualifying the name dummy with Employee::, you are defining a new free function called dummy, rather than the method of Employee.

2. When invoking the dummy method you need an object of class Employee, e.g.:

Employee emp;
emp.dummy();