C++ homework help

I have this homework assignment that i need help with and below is the code that i have so far. any help would be appreciated. thank you.


Write a program that tells what coins to give out for any amount of change from 1 cent to 99 cents.
For example, if the amount is 86 cents, the output would be something like the following:

86 cents can be given as 3 quarter(s) 1 dime(s) amd 1 penny(pennies).
Use coin denominations of 25 cents (quarters),
10 cents (dimes) and 1 cent (pennies).
Do not use nickel and half-dollar coins.
Your program will use the following function (amoung others): void computeCoin(int coinValue, int& number, int& amountLeft); /* Preconditions:
0 < coinValue < 100;
0 <= amountLeft < 100.
Postconditions: number has been set equal to the maximum number of coins of dem=nomination conValue cents that can be obtained from amountLeft cents.
AmountLeft has been decreased by the value of the coins, that is, decreased by number*coinValue.

For example, suppose the value of the variable amountLeft is 86. Then, after the following call, the value of number will be 3 and the value of amountLeft will be 11 (because if you take three quarters from 86 cents, that leaves 11 cents):computeCoins(25, number, amountLeft);

Include a loop that lets the user repeat this computation for new input values untill the user says he or she wants to end the program.
(Hint: Use integer division and the % operator to implement this function.) p>

here is what i have so far i just need to implement this function in this program
void computeCoin(int coinValue, int& number, int& amountLeft);
how do i do that.

Code:

#include <iostream>
#include <iomanip>
#include <cmath>
using namespace std;
void computeCoin(int coinValue, int& number, int& amountLeft); 
// Main Program
int main( )
{


 
// Variable Declations
int coin_value;
int quarters;
int dimes;
int pennies;
int total_amount;
char yes = 'y';
char Yes = 'Y';
char agian;



// Enter code below

do 
{
quarters = 0;
dimes = 0;

pennies = 0;


cout<< " Enter the amount of change ";
cin >> coin_value;
cout << "\n";

if (coin_value >= 25 && coin_value <= 100)
{
quarters = coin_value / 25;
coin_value = coin_value % 25; 
}


if (coin_value <= 24 && coin_value >= 10)
{
dimes = coin_value /10;
coin_value = coin_value % 10; 
}





if (coin_value <= 4 && coin_value >= 1)
{
pennies = coin_value; 
}


////////
total_amount =( quarters * 25)+ (dimes * 10) + pennies;
cout << total_amount << " Cents Can be given as " ;
////////


if (quarters == 1) 
{
cout << quarters << " quarter, ";
}


if (quarters == 2 || quarters == 3)
{
cout << quarters << " quarters, ";
}


if (dimes == 1)
{
cout << dimes << " dime, ";
}


if (dimes == 2 )
{
cout << dimes << " dimes, ";
}




if (pennies == 1) 
{
cout << pennies << " penny. " << endl;
}


if (pennies < 4 && pennies > 2)
{
cout << pennies << " pennies. " << endl;
}


cout << "\n";
cout << " Would you like to run the program agian (Y or N)? ";
cin >> agian;

}


while (agian == yes || agian == Yes);

cout << "\n\nEnd Program.\n";
return 0;
}

A few points:
1. Your code formatting and indentation needs work.
2. Misspelling the variable "agian" is a really bad idea.

As for the function, you've already implemented the logic. All you need to do is generalize is and stick it into a function. Which part of that are you having trouble with? What have you attempted so far?