I am getting the Error C2678 binary no operator found which

I am getting the Error C2678 binary \'==\': no operator found which takes a left-hand operand of type \'std::ostream\' (or there is no acceptable conversion) with this piece of the source code. I dont know how to fix this and would appreciate and answer.   

if (target == cout)
       target << \"\ \ Sales Person\'s Information Saved! \ \";

Here is the full source code:

#include <fstream> // file processing
#include <iostream> // cin and cout
#include <iomanip> // setw
#include <string> // string class
using namespace std;

class SalesPerson
{
private:
   int salesPersonId;
   string firstName;
   string lastName;

public:
   SalesPerson(); //default constructor doesn\'t have parameters
   SalesPerson(int id, string fn, string ln); //overloaded constructor;
                                           //parameter names in overloaded constructors should be different
                                           //from the class variable names, because the parameter values
                                           //are going to be assigned to the class variables.

   ~SalesPerson(); //destructor

                   //Set accessors do NOT return a value (void) because they are used
                   //to assign a value to a private variable. The value to assign is
                   //passed through the parameter.
   void setSalesPersonId(int id);
   void setFirstName(string fn);
   void setLastName(string ln);

   //Get accessors are used to return the value stored in a private
   //variable, so a parameter is not passed.
   int getSalesPersonId();
   string getFirstName();
   string getLastName();

   //Input accessors prompt for, get, and store a value in a private
   //variable. A value is not returned and a parameter is not passed.
   void inputSalesPersonId();
   void inputFirstName();
   void inputLastName();

};

SalesPerson::SalesPerson() {
   salesPersonId = 0;
   firstName = \"\";
   lastName = \"\";
}

SalesPerson::SalesPerson(int id, string fn, string ln) {
   salesPersonId = id;
   firstName = fn;
   lastName = ln;
}

SalesPerson::~SalesPerson() {
   cout << \"\ SalesPerson Object going out of scope. Id = \"
       << salesPersonId << endl;
   return;
}
void SalesPerson::setSalesPersonId(int id) {
   salesPersonId = id;
}
void SalesPerson::setFirstName(string fn) {
   firstName = fn;
}
void SalesPerson::setLastName(string ln) {
   lastName = ln;
}
int SalesPerson::getSalesPersonId() {
   return salesPersonId;
}
string SalesPerson::getFirstName() {
   return firstName;
}
string SalesPerson::getLastName() {
   return lastName;
}
void SalesPerson::inputSalesPersonId() {
   cout << \"Enter Sales Person ID (1000 - 9999): \";
   cin >> salesPersonId;
}
void SalesPerson::inputFirstName() {
   cout << \"Enter First Name without spaces: \";
   cin >> firstName;
}
void SalesPerson::inputLastName() {
   cout << \"Enter Last Name without spaces: \";
   cin >> lastName;
}

// function prototype
void outputSalesInfo(ostream& target, SalesPerson& salesPersonObj);

//main driver to test SalesPerson class
int main()
{
   //Open the file for output; if there are any errors, we need to
   //display an error message.

   ofstream outFile;
   outFile.open(\"P12.txt\");
   if (outFile.fail())
   {
       cout << \"Error opening output file for sales information.\ \"
           << \"Exiting program \ \ \";
       return -1;
   }

   cout << \"\ P12 \ \ \";

   //1001 Joe Smith - use default constructor and input functions
   SalesPerson salesPersonObj;

   //Save the validated sales info data as a record to the file.
   outputSalesInfo(outFile, salesPersonObj);
   //display the record on the screen
   outputSalesInfo(cout, salesPersonObj);

   //1002 Larry Jones - use set functions to change values.
   salesPersonObj.setSalesPersonId(1002);
   salesPersonObj.setFirstName(\"Larry\");
   salesPersonObj.setLastName(\"Jones\");

   //Save the sales info data as a record to the file.
   outputSalesInfo(outFile, salesPersonObj);
   //display the record on the screen
   outputSalesInfo(cout, salesPersonObj);

   //1003 Paul Sailor - use overloaded constructor
   SalesPerson salesPersonObj2(1003, \"Paul\", \"Sailor\");

   //Save the sales info data as a record to the file.
   outputSalesInfo(outFile, salesPersonObj2);
   //display the record on the screen
   outputSalesInfo(cout, salesPersonObj2);

   // Close the output file and exit program
   outFile.close();
   return 0;
}//end of main

//save the order information to a file or display to screen.
//target can be either cout or outFile because ofstream inherits ostream.
//ofstream objects are also ostream objects.
//also, must be ostream because cout is already declared as an ostream.

void outputSalesInfo(std::ostream& target, SalesPerson& salesPersonObj)
{
   //declare local variables
   int salesPersonId;
   string lastName, firstName;

   //Have the class return the private values to the local variables.
   //Then store them in the file.
   salesPersonId = salesPersonObj.getSalesPersonId();
   firstName = salesPersonObj.getFirstName();
   lastName = salesPersonObj.getLastName();

   if (target == cout)
       target << \"\ \ Sales Person\'s Information Saved! \ \";

   target.setf(ios::left);
   target << setw(6) << salesPersonId
       << setw(18) << firstName
       << setw(18) << lastName
       << endl;
   target.unsetf(ios::left);

   return;
}

Solution

You need to #include <string>. Also if you don\'t have them add #include <iostream> and #include <vector>