Finished all 5 programs

Checkpoint1/.vscode/launch.json

@@ -0,0 +1,28 @@
+{
+   // Use IntelliSense to find out which attributes exist for C# debugging
+   // Use hover for the description of the existing attributes
+   // For further information visit https://github.com/OmniSharp/omnisharp-vscode/blob/master/debugger-launchjson.md
+   "version": "0.2.0",
+   "configurations": [
+        {
+            "name": ".NET Core Launch (console)",
+            "type": "coreclr",
+            "request": "launch",
+            "preLaunchTask": "build",
+            // If you have changed target frameworks, make sure to update the program path.
+            "program": "${workspaceFolder}/bin/Debug/netcoreapp2.0/Checkpoint1.dll",
+            "args": [],
+            "cwd": "${workspaceFolder}",
+            // For more information about the 'console' field, see https://github.com/OmniSharp/omnisharp-vscode/blob/master/debugger-launchjson.md#console-terminal-window
+            "console": "internalConsole",
+            "stopAtEntry": false,
+            "internalConsoleOptions": "openOnSessionStart"
+        },
+        {
+            "name": ".NET Core Attach",
+            "type": "coreclr",
+            "request": "attach",
+            "processId": "${command:pickProcess}"
+        }
+    ,]
+}

Checkpoint1/.vscode/tasks.json

@@ -0,0 +1,15 @@
+{
+    "version": "2.0.0",
+    "tasks": [
+        {
+            "label": "build",
+            "command": "dotnet",
+            "type": "process",
+            "args": [
+                "build",
+                "${workspaceFolder}/Checkpoint1.csproj"
+            ],
+            "problemMatcher": "$msCompile"
+        }
+    ]
+}

Checkpoint1/Checkpoint1.cs

@@ -1,12 +1,90 @@
 using System;
+using System.Linq;
 
 namespace Checkpoint1
 {
     class Program
     {
         static void Main(string[] args)
         {
-            Console.WriteLine("Hello World!");
+            //Program 1
+            System.Console.WriteLine("Total amount of numbers between 1 and 100 that are divisible by 3 with no remainder:");
+            Console.WriteLine(CountThrees());
+
+            //Program 2
+            string InputStr;
+            int InputInt = 0, tempint = 0;
+            do
+            {
+                System.Console.WriteLine("Enter a number or type ok to exit");
+                InputStr = Console.ReadLine();
+                bool success = int.TryParse(InputStr, out tempint);
+                if (success == true)
+                {
+                    InputInt += tempint;
+                }
+                if (success == false)
+                {
+                    break;
+                }
+                Console.WriteLine($"Sum of the numbers is: {InputInt}");
+            }
+            while (InputStr != "ok");
+
+            //Program 3
+            int i, f = 1, num;
+            Console.WriteLine("\n\n");
+            Console.WriteLine("Input a number:");
+            num = Convert.ToInt32(Console.ReadLine());
+            for (i = 1; i <= num; i++)
+                f = f * i;
+
+            Console.WriteLine("{0}! = {1}", num, f);
+
+            //Program 4
+            System.Console.WriteLine("A random number is being picked between 1-10");
+            System.Console.WriteLine("You have 4 tries to guess the number");
+            int answer = 0;
+            int guess = 0;
+            Random number = new Random();
+            answer = number.Next(1, 11);
+            for (int numrandom = 0; numrandom <= 4; numrandom++)
+            {
+                if (numrandom == 4)
+                {
+                    System.Console.WriteLine("You lost");
+                    break;
+                }
+                System.Console.WriteLine("Enter guess");
+                guess = Convert.ToInt32(Console.ReadLine());
+                if (guess == answer)
+                {
+                    System.Console.WriteLine("You Won!");
+                    break;
+                }
+            }
+
+            //Program 5
+            Console.WriteLine("Enter some numbers seperated by ", "");
+            var numbers = Console.ReadLine();
+            var splitNumber = numbers.Split(',');
+            var maxNumber = splitNumber.Max();
+            Console.WriteLine("Highest is: " + maxNumber);
+        }
+
+        static int CountThrees()
+        {
+            int count = 0;
+
+            for (int i = 1; i <= 100; i++)
+            {
+                if (i % 3 == 0)
+                {
+                    count++;
+                }
+
+            }
+            return count;
         }
     }
 }