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Ive been working on a solution to my homework problem for a couple hours and I believe I have found the answer but I keep getting this error code

>Hw_3.obj : error LNK2019: unresolved external symbol "void __cdecl printTable(double,double,double,int)" (?printTable@@YAXNNNH@Z) referenced in function "void __cdecl process(void)" (?process@@YAXXZ)

1>Hw_3.obj : error LNK2019: unresolved external symbol "public: __thiscall Mortgage::Mortgage(double,double,int)" (??0Mortgage@@QAE@NNH@Z) referenced in function "void __cdecl process(void)" (?process@@YAXXZ)

```
#include<iostream>
#include<cmath>
#include<iomanip>
#include "Mortgage.h"
using namespace std;
void process() ;
void maxLoan() ;
void debt() ;
double calc_payment(double Loan, double rate, int term);
void printTable(double payment, double Loan, double rate, int term);
void main_menu() {
printf("\n\tOptions:\n") ;
printf("\n\t1: Determine the monthly payment based on \n\t\tLoan amount, interest rate and terms.\n") ;
printf("\n\t2: Determine the maximum Loan amount based on \n\t\tmonthly payment, interest rate and terms.\n") ;
printf("\n\t3: Determine the total interest paid based on \n\t\tDebt amount,monthly payment and rate .\n") ;
printf("\n\t0: Quit \n") ;
}
int main()
{
int choice ;
char resp[10];
printf("\n\t\tWelcome to CSC262 Mortgage Calculator System!!\n") ;
while(true) {
main_menu() ;
while(true) {
printf("\n\t\tYour choice is: ") ;
cin >> choice ;
if ( choice < 1 || choice > 3 ) {
printf("\n%d is an invalid choice!") ;
printf("\nPlease enter your choice 1, 2 or 3 :") ;
}
else break ;
}
switch (choice) {
case 1: process() ;
break ;
case 2 : maxLoan() ;
break ;
case 3: debt() ;
break ;
case 0 : printf("\n\nThank you for using CSC262 mortgage calculator System!\n\n") ;
return 0;
break ;
}
printf("\n\tWant to to continue? (Y/N)") ;
cin >> resp;
if ( resp[0] == 'Y' || resp[0] == 'y') continue ;
else break ;
}
printf("\n\nThank you for using CSC262 mortgage calculator System!\n\n") ;
return 0;
}
void process()
{ // process option 1 : determine Monthly mortgage payment
int term ;
double Loan , rate ;
double total_interest = 0.0 ;
char resp[10] ;
double payment;
cout << "\n\tPlease enter the Loan amount in $ :" ;
cin >> Loan ;
cout << "\n\tPlease enter the interest rate (e.g 4.5 for 4.5%) :" ;
cin >> rate ;
cout << "\n\tPlease enter the terms in # of months :" ;
cin >> term ;
Mortgage mtg(Loan, rate, term);
double calc_payment(double Loan, double rate, int term);
{
payment = Loan * ((rate*pow((1+rate),(term)))/(pow((1+rate),(term))-1));
}
void printTable(double payment, double Loan, double rate, int term);
{
cout << setw(14) << "Interest" << setw(10) << "Principal" << endl;
cout << setw(14) << "--------" << setw(10) << "---------" << endl;
double total_principal = 0; // total of payments applied to principal
double total_interest = 0; // total of payments applied to interest
for (int i = 0; i < term; i++) // print each payment
{
double to_interest = Loan * rate; // periodic interest
double to_principal = payment - to_interest; // principal part of payment
Loan -= (payment - to_interest);
total_interest += to_interest;
total_principal += to_principal;
cout << setw(3) << i + 1 << ":" <<
setw(10) << to_interest << setw(10) << to_principal << endl;
}
cout << endl << setw(14) << total_interest << setw(10) << total_principal << endl;
}
void display();
{
cout << "Mortgage Summary : \n\n";
cout << "Principal : " << Loan;
cout << "\nAnnual Rate : " << rate << "%\n";
cout << "Term : " << term << "\n";
cout << "Monthly Payment : " << payment << "\n\n";
printf("Do you want to print the payment table? (Y/N) ");
cin >> resp;
if ( resp[0] == 'Y' || resp[0] == 'y')
printTable(payment, Loan, rate, term);
else return;
}
}
void maxLoan()
{
double rate , pay , MaxLoan;
int term;
cout << "\n\tPlease enter the monthly payment you feel comfortable with : ";
cin >> pay ;
cout << "\n Please enter the interest rate : " ;
cin >> rate;
cout << "\n Please enter the term in # of months : ";
cin >> term;
MaxLoan = pay * ((pow((1+rate),(term))-1)/((rate*(pow((1+rate),(term))))));
cout << "\n The maximum loan will be : " << MaxLoan;
}
void debt()
{ // process option 3
double Loan , rate ;
double total_interest = 0.0 ;
double payment = 0.0 ;
double interest = 0.0 ;
int n = 0 ;
cout << "\nPlease enter the debt amount in Dollars : " ;
cin >> Loan;
cout << "\nPlease enter the interest rate : " ;
cin >> rate;
// put your code here ;
// main logic for determine the # of payment in order to pay-off
double remain = Loan ;
while ( remain > 0 ){
interest = remain * rate/1200 ;
total_interest += interest ;
n++ ;
remain -= payment - interest ;
}
}
```

I know some of the logic that makes the calculator work might be messed up but I am just trying to figure out how to fix the error, any help is greatly appreciated.