Synchronization of old projects

Part1

C#入门实践教程/随机数相关练习题/Program.cs

@@ -0,0 +1,34 @@
+Random r = new Random();
+int bossHealth = 20;
+int bossDefense = 10;
+int round = 1;
+try
+{
+    Console.WriteLine("游戏开始");
+    while (true) 
+    {
+        int attack = r.Next(8, 13);
+        Console.WriteLine("当前第{0}回合",round);
+        if (attack >= bossDefense)
+        {
+            bossHealth -= attack - bossDefense;
+            Console.WriteLine("你攻击了BOSS，造成了" + attack + "点伤害\n" + "BOSS剩余血量：" + bossHealth);
+        }else
+        {
+            Console.WriteLine("你的攻击被BOSS防御住了，造成了0点伤害");
+        }
+        round++;
+        if (bossHealth <= 0)
+        {
+            Console.WriteLine("你打赢了BOSS，共使用了{0}回合",round-1);
+            break;
+        }
+    }
+}catch (Exception ex)
+{
+    Console.WriteLine("错误代码: " + ex.Message);
+}
+finally
+{
+    Console.WriteLine("游戏结束");
+}