print() not a member of class? - c++

Question

I am trying to run a getter/setter code in C++ Visual Studio 2008 and have my header file, implementation file and main file. In the main, there is a print function (P1.print();) which tries to print the class object P1. I get error of print() not a member of Persontype. When I declare void print(); in header, I get 3 errors -----
Persontest.obj : error LNK2005: _main already defined in proj1.obj -----
Persontest.obj : error LNK2019: unresolved external symbol "public: void __thiscall
Persontype::print(void)" (?print#Persontype##QAEXXZ) referenced in function _main ----- fatal error LNK1120: 1 unresolved externals.
Can someone pls help me resolve this issue?
Persontype.h(header file):
#ifndef H_Persontype
#define H_Persontype
#include <iostream>
#include <string>
using namespace std;
class Persontype{
public:
Persontype();
Persontype(string fn, string mn, string ln, char g);
//setter
void setfirstName(string fn);
void setmiddleName(string mn);
void setlastName(string ln);
void setGender(char g);
//getter
string getfirstName() const;
string getlastName() const;
string getmiddleName() const;
char getGender() const;
private:
string firstName;
string middleName;
string lastName;
char gender;
};
#endif/
Person.cpp(implementation file):
#include <iostream>
#include <string>
#include "Persontype.h"
using namespace std;
//default constructor
Persontype::Persontype()
{
firstName = "Me";
middleName = "My";
lastName = "Mine";
gender = 'X';
}
//specific constructor
Persontype::Persontype(string fn, string mn, string ln, char g){
firstName = fn;
middleName = mn;
lastName = ln;
gender = g;
}
//setters
void Persontype::setfirstName(string fn)
{
firstName = fn;
}
void Persontype::setmiddleName(string mn)
{
middleName = mn;
}
void Persontype::setlastName(string ln)
{
lastName = ln;
}
void Persontype::setGender(char g)
{
gender = g;
}
//getters
string Persontype::getfirstName () const
{
return firstName;
}
string Persontype::getmiddleName () const
{
return middleName;
}
string Persontype::getlastName () const
{
return lastName;
}
char Persontype::getGender() const
{
return gender;
}
Persontest.cpp(main file):
#include "Persontype.h"
int main(){
Persontype P1("tom","smith","alice",'m');
P1.print();
}

Answer 1

You, of course, need to both declare it in the Persontype class declaration in the header:
void print() const;
and define it in the .cpp file:
void Persontype::print(void) const
{
cout << "My name is " << getfirstName() << ", I live on the second floor\n";
}
The errors about multiple main() have nothing to do with print(), that's some other error you're doing either in code which you're not showing or in how you build your program.