Example: Cashier Change

 Introduction
 This application shows how to assist the cashier of a store (super market, clothing store, hardware store, etc) figure out how much change to give to a customer after registering some items that have just been bought. The calculation produces the counts of dollar bills and coins in American currency.
```using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace Cashier_Change1
{
public class Program
{
static int Main(string[] args)
{
// This variable is the value that will be considered
string strAmount;
// This is the actual monetary value that will be used
double Amount    = 0.00;
// This will be an accessory used during calculation
double NewAmount = 0.00;
int    Decimals  = 0;
// These are the values that will be displayed
int    Fifties   = 0;
int    Twenties  = 0;
int    Tens      = 0;
int    Fives     = 0;
int    Ones      = 0;
int    Quarters  = 0;
int    Dimes     = 0;
int    Nickels   = 0;
int    Pennies   = 0;

try
{
Console.Write("Enter the amount: ");
int IndexOfPeriod = strAmount.IndexOf(".");

// This variable is used to locate the decimal side
string strDecimals = strAmount.Substring(IndexOfPeriod+1, 2);
Amount = double.Parse(strAmount);
Decimals = int.Parse(strDecimals);

if (Amount > 50)
{
Fifties = (int)(Amount / 50);
NewAmount = Amount - 50;
Twenties = (int)(NewAmount / 20);
NewAmount -= (Twenties * 20);
Tens = (int)(NewAmount / 10);
NewAmount -= (Tens * 10);
Fives = (int)(NewAmount / 5);
NewAmount -= (Fives * 5);
Ones = (int)(NewAmount);
}
else
{
NewAmount = Amount;
Twenties = (int)(NewAmount / 20);
NewAmount -= (Twenties * 20);
Tens = (int)(NewAmount / 10);
NewAmount -= (Tens * 10);
Fives = (int)(NewAmount / 5);
NewAmount -= (Fives * 5);
Ones = (int)(NewAmount);
}

Quarters = (int)(Decimals / 25);
Decimals -= Quarters * 25;
Dimes = (int)(Decimals / 10);
Decimals -= Dimes * 10;
Nickels = (int)(Decimals / 5);
Decimals -= Nickels * 5;
Pennies = Decimals;

Console.WriteLine("=======================");
Console.WriteLine("Amount Entered:   {0}", Amount);
Console.WriteLine("-----------------------");
if( Fifties != 0 )
Console.WriteLine("Fifties:          {0}", Fifties);
if( Twenties != 0 )
Console.WriteLine("Twenties:         {0}", Twenties);
if( Tens != 0 )
Console.WriteLine("Tens:             {0}", Tens);
if( Fives != 0 )
Console.WriteLine("Fives:            {0}", Fives);
if( Ones != 0 )
Console.WriteLine("Ones:             {0}", Ones);
Console.WriteLine("-----------------------");
if( Quarters != 0 )
Console.WriteLine("Quarters:         {0}", Quarters);
if( Dimes != 0 )
Console.WriteLine("Dimes:            {0}", Dimes);
if( Nickels != 0 )
Console.WriteLine("Nikels:           {0}", Nickels);
if( Pennies != 0 )
Console.WriteLine("Pennies:          {0}", Pennies);
Console.WriteLine("=======================");
}
catch (FormatException)
{
Console.WriteLine("Invlid Value!");
}

Console.WriteLine();
return 0;
}
}
}```

Here is an example or running the application:

```Enter the amount: 4.06
=======================
Amount Entered:   4.06
-----------------------
Ones:             4
-----------------------
Nikels:           1
Pennies:          1
=======================

Press any key to continue . . .```

Here is another example of running the application:

```Enter the amount: 42.68
=======================
Amount Entered:   42.68
-----------------------
Twenties:         2
Ones:             2
-----------------------
Quarters:         2
Dimes:            1
Nikels:           1
Pennies:          3
=======================

Press any key to continue . . .```

Here is another example of running the application:

```Enter the amount: 88.68
=======================
Amount Entered:   88.68
-----------------------
Fifties:          1
Twenties:         1
Tens:             1
Fives:            1
Ones:             3
-----------------------
Quarters:         2
Dimes:            1
Nikels:           1
Pennies:          3
=======================

Press any key to continue . . .```