Vending Machine Program - Not giving correct change. Need help desperatly!

[Rose Evans]

Hi guys, I really need some help!! My brain has completly gone dead.
This is a long code, sorry for that, but if you could look at it and tell me why my change is only coming up zeros, I'd greatly appreciate it!

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#include <iostream.h>
#include <iomanip.h> //for the setw()


const int CANDYBAR = 65; //correct
const int CHIPS = 55; //correct
const int SODA = 90; //correct
const int HONEYBUN = 110; //correct

//prototypes

void Write_Menu(); //correct
void Get_Selection(int&, int&);//
int Get_Money();//correct
void Write_Money(int);//correct
void Write_Selection(int);//correct
int Get_Change(); //almost correct
void Write_Change(int& quarters, int& dimes, int& nickels, int&money, int& remainder);//almost correct
void Write_Change(int change); //almost correct...at least its writing the cout statement
int Get_MixtureOfChange();
void Write_Mixture(int);



//end prototypes



int main()

{

int selection;
int money;
int change;
//int quarters;
//int dimes;
//int nickels;
//int remainder;



Write_Menu(); //call--no return or inputs /correct
Get_Selection(selection, change);
Write_Selection(selection);//working on this one now..
money = Get_Money(); //correct
Write_Money(money);//correct
change = Get_Change();//new

Write_Change(change);//new

return 0;

} //end main

//functions beginning

void Write_Menu()

{

cout <<" "<<endl<<endl;
cout <<" ***************************************** "<<endl;
cout <<" * * "<<endl;
cout <<" * VENDING MACHINE * "<<endl;
cout <<" * * "<<endl;
cout <<" * Candy Bar - .65 - Press 1 * "<<endl;
cout <<" * Chips - .55 - Press 2 * "<<endl;
cout <<" * Soda - .90 - Press 3 * "<<endl;
cout <<" * Honey Bun - 1.10 - Press 4 * "<<endl;
cout <<" * * "<<endl;
cout <<" ***************************************** "<<endl;

}


void Get_Selection(int& selection, int& change)

{
//int selection = 0;
//int change = 0;
int money = 0;

cout <<" Please enter your selection."<<endl; //correct
cout <<" Then press Enter. "<<endl; //correct
cin >>selection; //correct
//return selection;//new -- not sure if this should be here..


switch(selection)

{

case 1:

cout <<" You chose a Candy Bar - .65"<<endl<<endl;
change = money - CANDYBAR;
break;

case 2:
cout <<" You chose Chips - .55"<<endl;
change = money-CHIPS;
break;

case 3:
cout <<" You chose a Soda - .90"<<endl;
change = money - SODA;
break;

case 4:
cout <<" You chose a Honey Bun - 1.10"<<endl;
change = money - HONEYBUN;
break;

//Default message if user makes a choice other than 1 - 4.

default:
cout<<" You must enter a selection between 1 and 4. Thank You!"<<endl<<endl;
}
//return selection;

}

void Write_Selection(int selection)
{
cout<<" You chose" << selection <<">"<<endl;
//return selection;// not sure if this should be here either.
}

int Get_Money()//correct
{
int money; //correct
cout <<" Please enter the dollar amount"<<endl;
cout <<" you are spending. Then press Enter."<<endl;
cin >>money;//correct
return money;//correct
}

void Write_Money(int money) //Input is an integer, no return value //**
{

cout <<" You gave me " << money << "."<<endl;

}


int Get_Change()

{

int change = 0;
int money = 0;
int selection = 0;
change = money - selection;


return change;
}

void Write_Change(int change)

{
int amount = 0;
int remainder;
int nickels = 0;
//int change;
int money = 0;
int choice = 0;
int dimes;
int quarters;

quarters = money/25;
remainder = amount%25;
dimes = money/10;
remainder = money%10;
remainder = remainder % 5;
//return change;
//int money;


cout <<" Your change is " <<change << "."<<endl;
cout <<" Quarters - " <<quarters/25 <<endl;
cout <<" Dimes - " <<change/10<<endl;
cout <<" Nickels - " <<nickels/5<<endl<<endl;
cout <<" Enjoy your snack!"<<endl;
cout <<" Thank you for shopping with us!"<<endl<<endl;
}

int Get_MixtureOfChange()
{
int amount = 0;
int remainder;
//int nickels;
int change = 0;
int money = 0;
int choice = 0;
int dimes;
int quarters;

quarters = amount/25;
remainder = amount%25;
dimes = amount/10;
remainder = amount%10;
remainder = remainder % 5;
return change;

}

void Write_Mixture(int quarters,int dimes, int nickels)
{


cout <<" Quarters - " <<quarters <<endl;
cout <<" Dimes - " <<dimes<<endl;
cout <<" Nickels - " <<nickels<<endl<<endl;
cout <<" Enjoy your snack!"<<endl;
cout <<" Thank you for shopping with us!"<<endl<<endl;
}


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What in the world is wrong with it?