need help with void functions?

[riyrtp]

These are the questions

Write a void function welcome() which when called will display the welcome message when the program starts.
Write a void function header() which when called will display the header of the payment report.
Write a void function called getUserInput() which will prompt and read the original loan amount and the loan interest rate as done in question 1 and return these value in reference variables.
Write a function actualInteretsRate() which has 2 value parameters (actual interest paid for a year and the original loan) which calculates and returns the actual interest rate.
Use these functions in the second version.

With Void Functions. I need Void functions called: welcome() for my welcome message(it works the way it is), header() for the payment header(it works the way it is), and my 2 issues: getuserinput() and actualinterestrate().

#include <iostream>		//for cin and cout
#include <iomanip>		//for setprecision
#include <string>

using namespace std;

// The prupose of this program is to ask for a user to input a loan amout and interest rate percentage. The program then calculates the mothly payments
// and the total interest to be paid as well as the total amout left to be paid. Finally the program determines the average annual interest payemnts
// and the average annual interest rate. THis program is the same as the previous program except it uses void functions.

//create void functions
void welcome()
{
	cout<<"Welcome to Christopher's Bank\n\n";
};

void header()
{
	cout<<"Payment details:\n\n"
	<<"Payment Number	Interest Paid	Remaning Balance\n"
	<<"--------------	-------------	----------------\n";
};

void getuserinput()
{
	float loan, intrate;
	cout<<"What is the amount of your loan? ";
	cin>>loan;
	cout<<"What is the interest rate? (Please enter as a %) ";
	cin>>intrate;
};
void actualinterestrate()
{
	float actualint, yearint, loan1;
	actualint = yearint / loan1 * 100;
	cout<<"actual interest rate: "<<actualint<<endl;
};

int main()
{
	//Declare Variables
	float loan, loan1, intrate, monthlypay, intpay, intrate2, totalint, yearint, actualint;
	int paymentnum;
	string another;

	//Welcome message
	welcome();

	//Ask user to input loan amount and interest rate
	getuserinput();

	loan1 = loan;

	//display total loan amount and monthly payments and calculate monthly payments
	monthlypay = loan/20;
	cout<<"\nMonthly payment on a loan of $"<<fixed<<setprecision(2)<<loan<<" is $"<<fixed<<setprecision(2)<<monthlypay<<"\n\n";

	//calculate monthly payments and display them
	header();
	paymentnum = 0;
	intrate2 = intrate / 100;
	totalint=0;
	yearint=0;

	while(loan > 0)
	{
		intpay = loan * intrate2 / 12;
		loan = loan + intpay - monthlypay;
		paymentnum++;
		if(loan<=0)
		{
			loan=0;
		}
		cout<<"	"<<paymentnum<<"		"<<intpay<<"		"<<loan<<endl;
		totalint= totalint + intpay;
	};

	//calcuate total interest paid for one year, the total interest and the actual interest rate

	cout<<"\nTotal interest paid $"<<totalint<<endl;

	yearint= totalint / paymentnum * 12;
	cout<<"\n\nInterest paid for one year: $"<<yearint<<endl;

	actualinterestrate();


	//ask the user if they ahve another loan to calculate
	cout<<"Do you have another loan to evaluate? (Y or y for yes, any other input for no) ";
	cin>>another;
		if(another == "Y" || another == "y")
		{
			return main();
		}
		else
		{
			cout<<"It was a pleasure doing business with you.\n"
				<<"Anytime you need a loan think of <Christopher's Bank>\n\n";
			system("pause");
			return(0);
		}


}

This is the original code

#include <iostream>		//for cin and cout
#include <iomanip>		//for setprecision
#include <string>

using namespace std;

// The prupose of this program is to ask for a user to input a loan amout and interest rate percentage. The program then calculates the mothly payments
// and the total interest to be paid as well as the total amout left to be paid. Finally the program determines the average annual interest payemnts
// and the average annual interest rate.

int main()
{
	//Declare Variables
	float loan, loan1, intrate, monthlypay, intpay, intrate2, totalint, yearint, actualint;
	int paymentnum;
	string another;

	//Welcome message
	cout<<"Welcome to Christopher's Bank\n\n";

	//Ask user to input loan amount and interest rate
	cout<<"What is the amount of your loan? ";
	cin>>loan;
	cout<<"What is the interest rate? (Please enter as a %) ";
	cin>>intrate;

	loan1 = loan;

	//display total loan amount and monthly payments and calculate monthly payments
	monthlypay = loan/20;
	cout<<"\nMonthly payment on a loan of $"<<fixed<<setprecision(2)<<loan<<" is $"<<fixed<<setprecision(2)<<monthlypay<<"\n\n";

	//calculate monthly payments and display them
	cout<<"Payment details:\n\n"
		<<"Payment Number	Interest Paid	Remaning Balance\n"
		<<"--------------	-------------	----------------\n";
	paymentnum = 0;
	intrate2 = intrate / 100;
	totalint=0;
	yearint=0;

	while(loan > 0)
	{
		intpay = loan * intrate2 / 12;
		loan = loan + intpay - monthlypay;
		paymentnum++;
		if(loan<=0)
		{
			loan=0;
		}
		cout<<"	"<<paymentnum<<"		"<<intpay<<"		"<<loan<<endl;
		totalint= totalint + intpay;
	};

	//calcuate total interest paid for one year, the total interest and the actual interest rate

	cout<<"\nTotal interest paid $"<<totalint<<endl;

	yearint= totalint / paymentnum * 12;
	cout<<"\n\nInterest paid for one year: $"<<yearint<<endl;

	actualint = yearint / loan1 * 100;
	cout<<"actual interest rate: "<<actualint<<endl;

	//ask the user if they ahve another loan to calculate
	cout<<"Do you have another loan to evaluate? (Y or y for yes, any other input for no) ";
	cin>>another;
		if(another == "Y" || another == "y")
		{
			return main();
		}
		else
		{
			cout<<"It was a pleasure doing business with you.\n"
				<<"Anytime you need a loan think of <Christopher's Bank>\n\n";
			system("pause");
			return(0);
		}
}