build a system to schedule employee by checking availability

class employee
{
      private:
       struct EmployeeRecord
       {
         string EmpName;
         string EmpDOB;
         string EmpJob;
         int    EmpID;
         double EmpSalary;

       };
      
        EmployeeRecord Emp[100];
      
      public:
                 employee(void);
         void addEmployee(int EmpCounter);
         void deletEmployee(int EmpCounter);
           void showEmployeeRecords(int EmpCounter);    
         

};


employee::employee(void)
   {   }


void employee::addEmployee(int EmpCounter)
{

         cout<<"Enter Employee ID Number:"<<endl;
         cin>>Emp[EmpCounter].EmpID;

         cout<<"Enter Employee Name:"<<endl;
         cin>>Emp[EmpCounter].EmpName;

         cout<<"Enter Employee Birth Day:"<<endl;
         cin>>Emp[EmpCounter].EmpDOB;

         cout<<"Enter Employee job:"<<endl;
         cin>>Emp[EmpCounter].EmpJob;

         cout<<"Enter Employee Salary:"<<endl;
         cin>>Emp[EmpCounter].EmpSalary;
}


void employee::deletEmployee(int EmpCounter)
{
         int RecordNo;
         int DeletedEmpID;
           
         RecordNo=0;
         cout<<"Enter Staff Number:"<<endl;
         cin>>DeletedEmpID;
         for(int i=1;i<=EmpCounter;i++)
            {
               if(Emp[i].EmpID==DeletedEmpID)
               {
                  RecordNo=i;
                  break;
                }
            }
        if (RecordNo==0)
      {
         cout<<"Employee ID is Not Correct!!"<<endl;
      }
      else
      {
         for (int j=DeletedEmpID;j<=EmpCounter;j++)
         {
           Emp[j].EmpID     = Emp[j+1].EmpID;
           Emp[j].EmpName   = Emp[j+1].EmpName;
           Emp[j].EmpJob    = Emp[j+1].EmpJob;
           Emp[j].EmpDOB    = Emp[j+1].EmpDOB;
           Emp[j].EmpSalary = Emp[j+1].EmpSalary;
         }

      }               
}

void employee::showEmployeeRecords(int EmpCounter)
{
  cout <<"Employee Recordes"<<endl;
  cout <<"================================"<<endl;
  for (int j=1;j<=EmpCounter;j++)
  {
    cout <<"Employee ID: "<<Emp[j].EmpID<<endl;
    cout <<"Employee Name: "<<Emp[j].EmpName<<endl;
   cout <<"Employee Job: "<<Emp[j].EmpJob<<endl;
   cout <<"Employee Date of Birth: "<<Emp[j].EmpDOB<<endl;
   cout <<"Employee Salary: "<<Emp[j].EmpSalary<<endl;
    cout <<"================================"<<endl;
  }

}




this is empoyee class but i do not if is correct or not
but how i can do inheritence from it as i explain last time for admin and for programmer, admin make -insert new admin
-remove admin
-insert employee
-delete employee
-caculate working hours of employee
  and programmer
make
add new programmer
-remove programmer
-check in (time that they come employee)
-check out(time that they leave employee)

and how create object in main program

thanks so much for reply
i have just approximetly 12 days to submit project to teacher and i study parttime and i study basic things only
thanks again.