Not sure what my errors mean or how to fix,

[thelegendpaul]

This is my first lab in my object orientated programming course and im having a lot of issues so far but ive managed to make it this far. When attempting to compile this I get three errors:
1>project 1.cpp(101): error C2065: 'Henry' : undeclared identifier
1>project 1.cpp(101): error C2065: 'Smith' : undeclared identifier


Could some help me fix and understand what my issues are?

 #include "stdafx.h"
#include <iostream>
#include <iomanip>
#include <string>

using namespace System;
using namespace std;

class Employee
{
public:
	Employee();  //constructor
	void printLastFirst();
	void printFirstLast();
	void incrementAge();
	void giveRaise(double);
	void printInfo();
	void setName(string, string);
	void setAge(int);
	void setSalary(double);
	void setDepartmentID(int);
private:
	int age;
	int departmentID;
	string firstName;
	string lastName;
	double salary;
	double raise;
};

Employee::Employee()
{
	age = departmentID = 0;
	firstName = lastName = "Unknown";
	salary = 2000.0;
}

void Employee::setName(string l, string f)
{
	firstName = f;
	lastName = l;
}
void Employee::setAge(int A)
{
	age = (A > 0 && A < 130) ? A : 0;
}

void Employee::setSalary(double s)
{
	salary = (s >= 0 && s <= 1000000) ? s : 2000.0;
}

void Employee::setDepartmentID(int i)
{
	departmentID = (i >= 0) ? i : 0;
}

void Employee::printLastFirst()
{
	cout << lastName << "," << firstName << "\n";
}

void Employee::printFirstLast()
{
	cout << firstName << " " << lastName << "\n";
}

void Employee::incrementAge()
{
	if (age < 130)
	{
		++age;
	}
	
	cout << age << "\n";
}

void Employee::giveRaise(double r)
{
	raise = (r*salary);	
	cout << raise << "\n";
}

void Employee::printInfo()
{
	cout << "Employee Name: " << firstName << " " << lastName << "\n";
	cout << "Employee Age: " << age << "\n";
	cout << "Employee ID: " << departmentID << "\n";
	cout << "Employee Salary " << "$" << salary << "\n";
}
int main()
{
	Employee a;

	cout << "The default values are: \n";
	a.printInfo();


	a.setName(Henry, Smith);
	a.printLastFirst();


	system("pause");
}

[admkrk]

1>project 1.cpp(101): error C2065: 'Henry' : undeclared identifier
1>project 1.cpp(101): error C2065: 'Smith' : undeclared identifier

You need to use double quotes for strings.

1>project 1.cpp(102): error C3867: 'Employee::printLastFirst': function call missing argument list

Looks like you forgot something there too...

[shadowCODE]

use double quotes for string.

a.setName("Henry","smith");