添加Lesson2

C#进阶/Lesson2_Stack练习题/Program.cs

@@ -0,0 +1,24 @@
+using System.Collections;
+namespace Lesson2_Stack练习题
+{
+    internal class Program
+    {
+        static void Main(string[] args)
+        {
+            Console.Write("输入一个数字:");
+            int num = int.Parse(Console.ReadLine());
+            Stack bio = new Stack();
+            while (num != 0)
+            {
+                int r = num % 2;
+                bio.Push(r);
+                num /= 2;
+            }
+            Console.Write("你输入的数字二进制为:");
+            while (bio.Count > 0)
+            {
+                Console.Write(bio.Pop());
+            }
+        }
+    }
+}