Assigning a value to a variable

You assing the value to a local variable. When Wages::netPay ends the value is lost.
Do you wanted to assign the value (wage-tax) to a member variable?

void Wages::netPay()
{
     // float grossPay This local will make the member variable invisible.
     grossPay = (wage-tax);
     cout<< grossPay<<endl;
}

Can you please post the definition of class Wages if this was not the solution.

Hi,

You've defined float grossPay in ::netPay as a local variable. Since you output grossPay in the line
          << setw (9) <<"$" << right <<grossPay ; /////This is where it should dispaly.However, My answer is 0

I assume that grossPay is also defined as a class member. In this case, the local variable has a higher priority.

In other words, the class variable is never modified.
Simply remove the float grossPay declaration in netPay().

In order to make the local/instance distiction clearer, you can also use "this" explicitly:
void Wages::netPay()                    
{    
   
    this -> grossPay = (wage-tax);
     cout<< (this -> grossPay)<<endl;
}

But that's not necessary.

#include <iostream>
#include <cstring>
#include <ctype.h>
#include <string>
#include <iomanip>


using namespace std;
class Wages
{
private:
      string name;
      float hours;
      char classification;
      float rate;
      float wage;
      float tax;
      char enterChar;
      float grossPay ;
      
      
      public:
      void getName();
      float values();
      float assignHourlyRate();
      void calWage();
      void assignTax();
      void netPay();
      void displayHeadings();
      void displayLine();

      
};

      int main ()
      {
      Wages theWages;
      while(true)
      {
            theWages.getName();
            theWages.values();
            theWages.assignHourlyRate();
            theWages.calWage();
            theWages.assignTax();
            theWages.netPay();
            theWages.displayHeadings();
            theWages.displayLine();
      }
}

void Wages::getName()
{            
      cout<<"Please enter the Employees name: ";
      cin >>  name ;
      cout<<setw (33) << right <<"You have entered:"<< name << endl;
      cout<<setw (33) << right << "Is this correct? ";
      cin >>enterChar ;
      if (enterChar == 'N'||enterChar == 'n')
      {
            cout<<"Please reenter the correct name: ";
            cin >> name;
      }
}


float Wages::values()

{cout << "Enter "<<name<<"'s " << "total hours worked"": ";
cin >> hours ;
return 0;
}
float Wages::assignHourlyRate()
{
      cout << "Enter classification: ";
      cin >> classification;
      classification = toupper(classification);
      while (classification != 'A' && classification != 'B' && classification != 'C' && classification != 'D')
      {
            cout << "Your choices are A, B, C,or D : ";
            cin >> classification;
            classification = toupper(classification);
      }
      switch (classification)
      {
      case 'A':rate = 10.25;break;
      case 'B':rate = 8.5;break;
      case 'C':rate = 6.3;break;
      case 'D':rate = 4.65;break;
      }
      return 0;

}
void Wages::calWage()
{

      wage = (rate*hours);
      if (hours > 40)
      {
            wage = (wage+((hours-40)* rate/2));
      }
      
}
void Wages::assignTax()
{

      if (wage<=200.00)
      {tax = (wage *.12);
      cout <<"Tax rate:"<<" .12"<< endl;
      }
      else
            if
                  (wage >200.00 && wage <= 350.00)
            {
                  tax = (wage *.15);
                  cout <<"Tax rate:"<<" .15"<< endl;
            }
            else
            {
                  tax = (wage *.18);
                  cout <<"Tax rate:"<<" .18"<< endl;
            }

}
void Wages::netPay()
      
{      float grossPay;
   
    grossPay = (wage-tax);
      
      cout<< grossPay<<endl;
}
void Wages::displayHeadings()
{
      cout << "================================================="
            << "=====================\n";
      cout<<endl;
      cout << setw (12) << left << "Name"
            << setw (4) << right << "Hours Worked"
            << setw (7) << right << "Class"
            << setw (11) << right << "Hrly Wage"
            << setw (9) << right << "Net Pay"
            << setw (6) << right << "Tax"
            << setw (12) << right << "Gross Pay" << endl;
      cout << "------------------------------------------------"
            << "----------------------\n";
}
void Wages::displayLine()
{
      cout << setw (12) << left  << name
            << setw (11) << right << hours
            << setw (8) << right << classification
            << setw (11)  << right << rate
            << setw (7) <<"$" << right <<wage
            << setw (6) <<"$" << right <<tax
            << setw (9) <<"$" << right <<grossPay ;
      cout << endl;
      cout << endl;      
}      
   

Removing     float grossPay;  corrected my problem. Thank-you, so that statement redefine the vari ble within the funtion causing other funtions not to see it?

no they can see the member variable, but u have stroed the result of your calculation in the local varibale not in the member varibale, so the member variable has the initial value not the calculated value.

just FYI. if you have a static member for a class, and you declare a local variable by the same name then you can access the static variable by className::varName.