Merge pull request #345 from pczajkowski/main

22_Change in C#

22_Change/csharp/Change.csproj

@@ -0,0 +1,8 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <TargetFramework>net5.0</TargetFramework>
+  </PropertyGroup>
+
+</Project>

22_Change/csharp/Change.sln

@@ -0,0 +1,25 @@
+
+Microsoft Visual Studio Solution File, Format Version 12.00
+# Visual Studio Version 16
+VisualStudioVersion = 16.0.810.16
+MinimumVisualStudioVersion = 10.0.40219.1
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Change", "Change.csproj", "{AE094667-8496-4ECF-8B42-B1648EE26073}"
+EndProject
+Global
+	GlobalSection(SolutionConfigurationPlatforms) = preSolution
+		Debug|Any CPU = Debug|Any CPU
+		Release|Any CPU = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(ProjectConfigurationPlatforms) = postSolution
+		{AE094667-8496-4ECF-8B42-B1648EE26073}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{AE094667-8496-4ECF-8B42-B1648EE26073}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{AE094667-8496-4ECF-8B42-B1648EE26073}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{AE094667-8496-4ECF-8B42-B1648EE26073}.Release|Any CPU.Build.0 = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(SolutionProperties) = preSolution
+		HideSolutionNode = FALSE
+	EndGlobalSection
+	GlobalSection(ExtensibilityGlobals) = postSolution
+		SolutionGuid = {65684CBD-CD74-46AF-8E9E-0F69DCF72697}
+	EndGlobalSection
+EndGlobal

22_Change/csharp/Program.cs

@@ -0,0 +1,129 @@
+using System;
+
+namespace Change
+{
+    class Program
+    {
+        /// <summary>
+        /// Prints header.
+        /// </summary>
+        static void Header()
+        {
+            Console.WriteLine("Change".PadLeft(33));
+            Console.WriteLine("Creative Computing Morristown, New Jersey".PadLeft(15));
+            Console.WriteLine();
+            Console.WriteLine();
+            Console.WriteLine();
+            Console.WriteLine("I, your friendly microcomputer, will determine\n"
+            + "the correct change for items costing up to $100.");
+            Console.WriteLine();
+            Console.WriteLine();
+        }
+
+        /// <summary>
+        /// Gets user input for price and payment.
+        /// </summary>
+        /// <returns>
+        /// False if any input can't be parsed to double. Price and payment returned would be 0.
+        /// True if it was possible to parse inputs into doubles. Price and payment returned 
+	    /// would be as provided by the user.
+	    /// </returns>
+        static (bool status, double price, double payment) GetInput()
+        {
+            Console.Write("Cost of item? ");
+            var priceString = Console.ReadLine();
+            if (!double.TryParse(priceString, out double price))
+            {
+                Console.WriteLine($"{priceString} isn't a number!");
+                return (false, 0, 0);
+            }
+
+            Console.Write("Amount of payment? ");
+            var paymentString = Console.ReadLine();
+            if (!double.TryParse(paymentString, out double payment))
+            {
+                Console.WriteLine($"{paymentString} isn't a number!");
+                return (false, 0, 0);
+            }
+
+            return (true, price, payment);
+        }
+
+        /// <summary>
+        /// Prints bills and coins for given change.
+        /// </summary>
+        /// <param name="change"></param>
+        static void PrintChange(double change)
+        {
+            var tens = (int)(change / 10);
+            if (tens > 0)
+                Console.WriteLine($"{tens} ten dollar bill(s)");
+
+            var temp = change - (tens * 10);
+            var fives = (int)(temp / 5);
+            if (fives > 0)
+                Console.WriteLine($"{fives} five dollar bill(s)");
+
+            temp -= fives * 5;
+            var ones = (int)temp;
+            if (ones > 0)
+                Console.WriteLine($"{ones} one dollar bill(s)");
+
+            temp -= ones;
+            var cents = temp * 100;
+            var half = (int)(cents / 50);
+            if (half > 0)
+                Console.WriteLine($"{half} one half dollar(s)");
+
+            temp = cents - (half * 50);
+            var quarters = (int)(temp / 25);
+            if (quarters > 0)
+                Console.WriteLine($"{quarters} quarter(s)");
+
+            temp -= quarters * 25;
+            var dimes = (int)(temp / 10);
+            if (dimes > 0)
+                Console.WriteLine($"{dimes} dime(s)");
+
+            temp -= dimes * 10;
+            var nickels = (int)(temp / 5);
+            if (nickels > 0)
+                Console.WriteLine($"{nickels} nickel(s)");
+
+            temp -= nickels * 5;
+            var pennies = (int)(temp + 0.5);
+            if (pennies > 0)
+                Console.WriteLine($"{pennies} penny(s)");
+        }
+
+        static void Main(string[] args)
+        {
+            Header();
+
+            while (true)
+            {
+                (bool result, double price, double payment) = GetInput();
+                if (!result)
+                    continue;
+
+                var change = payment - price;
+                if (change == 0)
+                {
+                    Console.WriteLine("Correct amount, thank you!");
+                    continue;
+                }
+
+                if (change < 0)
+                {
+                    Console.WriteLine($"Sorry, you have short-changed me ${price - payment:N2}!");
+                    continue;
+                }
+
+                Console.WriteLine($"Your change ${change:N2}");
+                PrintChange(change);
+                Console.WriteLine("Thank you, come again!");
+                Console.WriteLine();
+            }
+        }
+    }
+}