How classes are implement in real software

Classes are often constructed with two files, and used with a third
 1) Header (.h)
          Code file that contains the class template
 2) Implementation (.cpp)
          Code file that contains the class implementation

     Defines the actions of the methods, etc…
 3) Driver (.cpp)
         Code file that uses these two files to create an instance of the object
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// 1) Header (.h)
//Filename:name.h
class name
{
  private:
    char *_firstName;
    char *_lastName;
  public:
    char *getFirstName();
    char *getLastName();
   
    void setFirstName(char*);
    void setLastName(char*);
   
};
____________________________________________________________________________________

// 2) Implementation (.cpp)
//Filename: name.cpp
#include "name.h"

void name :: setFirstName(char *firstName)
{
  _firstName = firstName;
}

void name :: setLastName(char *lastName)
{
  _lastName = lastName;
}

char* name :: getFirstName()
{
  return _firstName;
}

char* name :: getLastName()
{
  return _lastName;
}
___________________________________________________________________________________

//  3) Driver (.cpp)
//Filename: NameDriver.cpp
#include <iostream>
#include "name.cpp"
using namespace std;

int main()
{
  name myName;
  myName.setFirstName("Honey");
  myName.setLastName("singh");
 
  cout << "Hello "
     << myName.getFirstName() << " "
     << myName.getLastName() << endl;
 
  return 0;
}
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OUTPUT:
Hello Honey singh