From a50d77b82f6a2604272a7613edd8637d92802839 Mon Sep 17 00:00:00 2001
From: Isaac Alter <i_alter@yahoo.com>
Date: Sun, 23 Jul 2023 16:56:05 -0600
Subject: [PATCH] Add feat: finished debugging the challenge, created a
 variable in the MakeChange method to hold the total ammount of types of bills
 I have combining the twenties, tens, etc arguments with their corresponmding
 cashTill values. Depending on amount of change needed via the while loops
 will incrementally subtract those available variables once finished with
 while loops will directly change the amount of bills in cashTill elements to
 the available bills left.

---
 .../challenge-project/Starter/Program.cs      | 22 +++++++++++--------
 .../challenge-project/Starter/Starter.csproj  |  2 +-
 2 files changed, 14 insertions(+), 10 deletions(-)

diff --git a/2-csharp/lesson-6-projects/challenge-project/Starter/Program.cs b/2-csharp/lesson-6-projects/challenge-project/Starter/Program.cs
index b769206..9d481f3 100644
--- a/2-csharp/lesson-6-projects/challenge-project/Starter/Program.cs
+++ b/2-csharp/lesson-6-projects/challenge-project/Starter/Program.cs
@@ -17,7 +17,6 @@ is used to ensure that logic in the MakeChange method is working as
 expected.
 */
 
-
 string? readResult = null;
 bool useTestData = false;
 
@@ -115,10 +114,10 @@ static void LoadTillEachMorning(int[,] registerDailyStartingCash, int[] cashTill
 
 static void MakeChange(int cost, int[] cashTill, int twenties, int tens = 0, int fives = 0, int ones = 0)
 {
-    cashTill[3] += twenties;
-    cashTill[2] += tens;
-    cashTill[1] += fives;
-    cashTill[0] += ones;
+    int availableTwenties = cashTill[3] + twenties;
+    int availableTens = cashTill[2] + tens;
+    int availableFives = cashTill[1] + fives;
+    int availableOnes = cashTill[0] + ones;
 
     int amountPaid = twenties * 20 + tens * 10 + fives * 5 + ones;
     int changeNeeded = amountPaid - cost;
@@ -130,28 +129,28 @@ static void MakeChange(int cost, int[] cashTill, int twenties, int tens = 0, int
 
     while ((changeNeeded > 19) && (cashTill[3] > 0))
     {
-        cashTill[3]--;
+        availableTwenties--;
         changeNeeded -= 20;
         Console.WriteLine("\t A twenty");
     }
 
     while ((changeNeeded > 9) && (cashTill[2] > 0))
     {
-        cashTill[2]--;
+        availableTens--;
         changeNeeded -= 10;
         Console.WriteLine("\t A ten");
     }
 
     while ((changeNeeded > 4) && (cashTill[1] > 0))
     {
-        cashTill[1]--;
+        availableFives--;
         changeNeeded -= 5;
         Console.WriteLine("\t A five");
     }
 
     while ((changeNeeded > 0) && (cashTill[0] > 0))
     {
-        cashTill[0]--;
+        availableOnes--;
         changeNeeded -= 1;
         Console.WriteLine("\t A one");
     }
@@ -159,6 +158,11 @@ static void MakeChange(int cost, int[] cashTill, int twenties, int tens = 0, int
     if (changeNeeded > 0)
         throw new InvalidOperationException("InvalidOperationException: The till is unable to make change for the cash provided.");
 
+    cashTill[3] = availableTwenties;
+    cashTill[2] = availableTens;
+    cashTill[1] = availableFives;
+    cashTill[0]= availableOnes;
+
 }
 
 static void LogTillStatus(int[] cashTill)
diff --git a/2-csharp/lesson-6-projects/challenge-project/Starter/Starter.csproj b/2-csharp/lesson-6-projects/challenge-project/Starter/Starter.csproj
index f02677b..74abf5c 100644
--- a/2-csharp/lesson-6-projects/challenge-project/Starter/Starter.csproj
+++ b/2-csharp/lesson-6-projects/challenge-project/Starter/Starter.csproj
@@ -2,7 +2,7 @@
 
   <PropertyGroup>
     <OutputType>Exe</OutputType>
-    <TargetFramework>net7.0</TargetFramework>
+    <TargetFramework>net6.0</TargetFramework>
     <ImplicitUsings>enable</ImplicitUsings>
     <Nullable>enable</Nullable>
   </PropertyGroup>