void income_menu ()
{
 
for (;;)  // C/C++ idiom for (loop) forever
       {
  system ("cls");
  int update_income_choice;
 
  const string KeywordIncomePaycheck = "Paycheck: ";
  const string KeywordIncomeInterest = "Income: ";
  double   paycheck;
  double   interest;
  ofstream income;
  income.open ("Income.txt", ios::in);
 
  cout << "You have chosen to update Income entries" << endl;
  cout << "Please enter the number for the option you wish to modify" << endl;
  cout << "*******************" << endl;
  cout << "*  1. Paychecks   *" << endl;
  cout << "*  2. Interest    *" << endl;
  cout << "*******************" << endl;
  cin >> update_income_choice;
 
      if (update_income_choice == 1)
      {
         cout << "Please enter the ammount (in RM) of the paycheck" << endl;
         cin >> paycheck;
         income << KeywordIncomePaycheck << paycheck << endl;
      }
      else if (update_income_choice == 2)
      { 
         cout << "Please enter the ammount (in RM) of the Interest" << endl;
         cin >> interest;   
         income << KeywordIncomeInterest << interest << endl;
      }
 
      bool tcp(true);
           while ( tcp )
           {
               char ans1;  
 
               cout << "do you wish to go back to main?"
                       "(y for yes and n for no)"
                    << endl;
 
               cin >> ans1;
 
               switch (ans1)
               {
               case 'y':
               case 'Y':
                   mainmenu();  // return to caller
                   break;
 
               case 'n':
               case 'N':
                   tcp = false; // input OK, set tcp false
                                // to quit while loop
                   break;   // break now required !!!
 
               default:
                   cout << "\nPlease enter y or n\n";
                   break;// not required but add it anyway!
               } // end of switch
           } // end of while ( tcp )
 
       } // end for-ever for loop
   }; // end of function

void fixed_expenses_menu ()
{
     for (;;)
     {
       system ("cls");
       int fixed_expenses_choice;
 
       double car_insurance_ammount;
       double cell_phone_charges_ammount;
       double student_loan_ammount;
       double rent_ammount;
       double others_ammount;
 
       const string KeywordCarInsurance = "Car Insurance: "; 
       const string KeywordCellPhoneChargesAmmount = "Cell Phone Charges Ammount: ";
       const string KeywordStudentLoanAmmount = "Student Loan: ";
       const string KeywordRentAmmount = "Rent Ammount: ";
       const string KeywordOthersAmmount = "Others: ";
 
       ofstream fixed_expenses;
       fixed_expenses.open ("Fixed Expenses.txt", ios::in);
 
          cout << "You have chosen to update Fixed Expenses" << endl;
          cout << "Which Fixed Expense would you like to add?" << endl;
          cout << "%%%%%%%%%%%%%%%%%%%%%" << endl;
          cout << "%  1. Car Insurance %" << endl;
          cout << "%  2. Cell Phone    %" << endl;
          cout << "%  3. Student Loans %" << endl;
          cout << "%  4. Rent          %" << endl;
          cout << "%  5. Others        %" << endl;
          cout << "%%%%%%%%%%%%%%%%%%%%%" << endl;
          cout << "Please enter the number for the option you wish to modify" << endl;
          cin >>  fixed_expenses_choice;
              if (fixed_expenses_choice == 1 )
              {
                 cout << "Enter Car Insurance Expense ammount" << endl;
                  cin >> car_insurance_ammount;         
                  fixed_expenses << KeywordCarInsurance << car_insurance_ammount << endl;
              }   
              else if (fixed_expenses_choice == 2)
              { 
                   cout << "Enter Cell Phone Expenses ammount" << endl;
                   cin >> cell_phone_charges_ammount;
                   fixed_expenses << KeywordCellPhoneChargesAmmount << cell_phone_charges_ammount << endl;       
              }
              else if (fixed_expenses_choice == 3)
              {
                   cout << "Enter Student Loans ammount" << endl;
                   cin >> student_loan_ammount;
                   fixed_expenses << KeywordStudentLoanAmmount << student_loan_ammount << endl;
              }
              else if (fixed_expenses_choice == 4)
              {
                   cout << "Enter Rent ammount" << endl;
                   cin >> rent_ammount;
                   fixed_expenses << KeywordRentAmmount << rent_ammount << endl;
              }
              else if (fixed_expenses_choice ==5)
              {
                   cout << "Enter ammount of the other expenses: " << endl;
                   cin >> others_ammount;
                   fixed_expenses << KeywordOthersAmmount << others_ammount << endl;
              }
     bool tcp(true);
           while ( tcp )
           {
               char ans2;  
 
               cout << "do you wish to go back to main?"
                       "(y for yes and n for no)"
                    << endl;
 
               cin >> ans2;
 
               switch (ans2)
               {
               case 'y':
               case 'Y':
                   mainmenu();  // return to caller
                   break;
 
               case 'n':
               case 'N':
                   tcp = false; // input OK, set tcp false
                                // to quit while loop
                   break;   // break now required !!!
 
               default:
                   cout << "\nPlease enter y or n\n";
                   break;// not required but add it anyway!
               } // end of switch
           } // end of while ( tcp )
 
       } // end for-ever for loop
 
 
 
};

void variable_expenses_menu ()
{     
  for (;;)
     {
     system ("cls");
     int variable_expenses_choice;
 
     double food_expenses_ammount;
     double book_expenses_ammount;
     double variable_others_ammount; 
 
     const string FoodExpensesAmmount = "Food Expenses Ammount: ";
     const string BookExpensesAmmount = "Book Expenses Ammount: ";
     const string VariableOthersAmmount = "Others Ammount: "; 
 
      ofstream variable_expenses;
      variable_expenses.open ("Variable Expenses.txt", ios::in);
 
          cout << "You have chosen to update Variable Expenses" << endl;
          cout << "Which Variable Expense would you like to add?" << endl;
          cout << "##############" << endl;
          cout << "# 1. Food    #" << endl;
          cout << "# 2. Books   #" << endl;
          cout << "# 3. Others  #" << endl;
          cout << "##############" << endl;
          cout << "Please enter the number for the option you wish to modify" << endl;
          cin >> variable_expenses_choice;
          if (variable_expenses_choice ==1)
            {  
 
                  cout << "Enter Food Expenses Ammount: " << endl;
                  cin >> food_expenses_ammount;
                  variable_expenses << FoodExpensesAmmount << food_expenses_ammount << endl;
               }
 
 
          else if (variable_expenses_choice ==2)
              {
                   cout << "Enter Book Expenses Ammount: " << endl;
                   cin >> book_expenses_ammount;
                   variable_expenses << BookExpensesAmmount << book_expenses_ammount << endl;   
              }
 
 
          else if (variable_expenses_choice ==3)
              {
                   cout << "Enter ammount of other expenses: " << endl;
                   cin >> variable_others_ammount;
                   variable_expenses << VariableOthersAmmount << variable_others_ammount << endl;
 
              }
 
 
    bool tcp(true);
           while ( tcp )
           {
               char ans3;  
 
               cout << "do you wish to go back to main?"
                       "(y for yes and n for no)"
                    << endl;
 
               cin >> ans3;
 
               switch (ans3)
               {
               case 'y':
               case 'Y':
                   mainmenu();  // return to caller
                   break;
 
               case 'n':
               case 'N':
                   tcp = false; // input OK, set tcp false
                                // to quit while loop
                   break;   // break now required !!!
 
               default:
                   cout << "\nPlease enter y or n\n";
                   break;// not required but add it anyway!
               } // end of switch
           } // end of while ( tcp )
 
       } // end for-ever for loop
 
};