How to accept user input in a class when using private variables? - c++

Question

I have created a class called User:
has 4 private variables
a get_input() and print_output() function
a main function where I am accepting user input, where I have to initialize a new set of variables to pass the user input to the get_input() function
My question is: Do I have to define a new set of variables? Or is there any way to name, DOB, etc. directly to the get_input() function?
Here's my code:
#include <iostream>
#include <vector>
#include <string>
class User
{
private:
std::string name;
std::string DOB;
std::string telephone_no;
std::string add;
public:
int main();
User()
{
name = "";
DOB = "";
telephone_no = "";
add = "";
}
void get_input(std::string &name , std::string &DOB , std::string &telephone_no , std::string &add)
{
this->name = name;
this->DOB = DOB;
this->telephone_no;
this->add = add;
}
void print_output()
{
std::cout << name;
std::cout << DOB;
std::cout << telephone_no;
std::cout << add;
}
};
int main()
{
std::string name;
std::string DOB;
std::string telephone_no;
std::string add;
std::vector<std::string> ;
User obj ;
std::cout << "Enter the name of the user : ";
std::cin >> name;
std::cout << "Enter the date of birth of the user : ";
std::cin >> DOB;
std::cout << "Enter the telephone number of the user : ";
std::cin >> telephone_no;
std::cout << "Enter the address of the user : ";
std::cin >> add;
obj.get_input(name , DOB , telephone_no , add);
obj.print_output();
}

Answer 1

Followed the advice of Sam Varshachik
and changed my program accordingly:
You should input the variables first, then pass them to the class's constructor, when creating an instance of the class, which will use them to construct its private members
#include <iostream>
#include <vector>
#include <string>
class User
{
private :
std::string name;
std::string DOB;
std::string telephone_no;
std::string add;
public :
User(std::string &name , std::string &DOB , std::string &telephone_no , std::string &add)
{
this->name = name;
this->DOB = DOB;
this->telephone_no;
this->add = add;
}
void print_output()
{
std::cout << name;
std::cout << DOB;
std::cout << telephone_no;
std::cout << add;
}
};
int main()
{
//initializing local variables
std::string name;
std::string DOB;
std::string telephone_no;
std::string add;
std::vector<std::string> v;
//prompting the user to get essential details
std::cout << "Enter the name of the user : ";
std::cin >> name;
std::cout << "Enter the date of birth of the user : ";
std::cin >> DOB;
std::cout << "Enter the telephone number of the user : ";
std::cin >> telephone_no;
std::cout << "Enter the address of the user : ";
std::cin >> add;
//passing the entered_input into the object variables
User obj(name , DOB , telephone_no , add);
obj.print_output();
}