Emergency C++ Help Please!!

I'm a student that is well beyond desparate need of c++ help. I have 2 problems that i need emergency help with. Here they are.

1-I have to write a family of overloaded functions called equal(), which take two arguments of the same type, returning 1 if the arguments are equal, and 0 otherwise. This is what i have that refuses to compile.

#include <cstrings>
#include <iostream>
using std::cin;
using std::cout;
using std::endl;

int equal(int a,int b)
{
   return (a,b) ? 1 : 0;
}

int equal(double a,double b)
{
   return (a,b) ? 1 : 0;
}

   equal(char a,char b)
{
   return (a==b) ? 1 : 0;
}

int equal(char* a,char* b)
{
   return strcmp(a,b)==0 ? 1 : 0;
}

int main()
{
   int iA=3, iB=5;
   cout << "Comparing iA = " << iA << " and iB = " << iB << endl;
   if (equal(iA,iB))
      cout << "iA and iB are the same" << endl;
   else
      cout << "iA and iB are different" << endl;

   double dA=3.5, dB=3.5;
   cout << "Comparing dA = " << dA << " and dB = " << dB << endl;
   if (equal(dA,dB))
      cout << "dA and dB are the same" << endl;
   else
      cout << "dA and dB are different" << endl;

   char* pA = "greeting";
   char* pB = "to you";
   cout << "Comparing pA = \"" << pA << "\" and pB = \"" << pB << "\"" << endl;
   if (equal(pA,pB))
      cout << "pA and pB are the same" << endl;
   else
      cout << "pA and pB are different" << endl;

   char* pC = "mickey";
   cout << "Comparing pB = \"" << pB << "\" and pC = \"" << pC << "\"" << endl;
   if (equal(pB,pC))
      cout << "pB and pC are the same" << endl;
   else
      cout << "pB and pC are different" << endl;

   return 0;
}

Code (markup):

*********************************************************
Here is number 2
Write the program as a procedural C++ program. Allow the user to input the amount of a mortgage and then select from a menu of mortgage loans:

- 7 year at 5.35%
- 15 year at 5.5%
- 30 year at 5.75%

Use an array for the different loans. Display the mortgage payment amount. Then, list the loan balance and interest paid for each payment over the term of the loan. On longer-term loans, the list will scroll off the screen. Do not allow the list to scroll off the screen, but rather display a partial list and then allow the user to continue the list. Allow the user to loop back and enter new data or quit. Insert comments in the program to document the program.

This what i ahve so far, i don't know if this is close to being right.

#include <iostream>
#include <cmath>
#include <iomanip>
using std::cin;
using std::cout;


using namespace std;


int main()
{
	const int MONTHS = 12;
	double loan, rate, balance, payment;

		double month;
		double interest;
		double principal;
		double monthlypayment;

		cout << "Loan amount:$";  //Loan amouny
		cin >> loan;
		cout << "Annual Interest rate:";  //Loan amount
		cin >> rate;
		cout << "Monthly payment:";  //Monthly payment
		cin >> payment;

		cout << endl;
		cout << setw(5) << "Month"; //Display moth
		cout << setw(10) << "Interest"; //Dispaly interest
		cout << setw(10) << "principal"; //Display principal
		cout << setw(10) << "Monthly payment"; //Display payment
		cin >> payment;

		cout << endl;
		cout << setw(5) << "Month";
		cout << setw(10) << "Interest";
		cout << setw(10) << "Principal";
		cout << setw(10) << "Balance" << endl;


		cout << "..............................\n";

		balance = loan;
		double numPayments = loan - payment;
		for (int x = 1; x <= numPayments; x++);
		{
			double interest, principal;
			interest = rate / MONTHS * balance;
			if (x !=numPayments)
			{
				principal = payment - interest;
			}
			else
			{
				principal = balance;
				payment = balance + interest;
			}

			double balance = principal;

			cout << setw(4) << month;
			cout << setw(10) << interest;
			cout << setw(10) << principal;
			cout << setw(10) << balance << endl;
		}
		

	
	return 0;
}

Code (markup):

 

Hmm, it's a good idea to tell us what's the problem is.. there's no one going to just have fun and figure out what's wrong with your code

 

You may seem to have a good music taste, but don't expect people here to do your homework for you.

Did you even try if the code works?

 

Yeah you should really try to tell us what is wrong or what wont compile or what wont work.

Also what is return(a,b) ???