diff --git a/C#核心/C#核心.sln b/C#核心/C#核心.sln
index 7f6507e..ca6ddad 100644
--- a/C#核心/C#核心.sln
+++ b/C#核心/C#核心.sln
@@ -11,6 +11,8 @@ Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Lesson10_封装-运算符
EndProject
Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Lesson11_内部类和分部类", "Lesson11_内部类和分部类\Lesson11_内部类和分部类.csproj", "{51A60C77-3609-42BD-B0D9-83E1B61B6E69}"
EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Lesson12_继承-继承的基本概念练习", "Lesson12_继承_继承的基本概念练习\Lesson12_继承-继承的基本概念练习.csproj", "{DD7B30CE-773B-4752-9703-D0D5E6E4F376}"
+EndProject
Global
GlobalSection(SolutionConfigurationPlatforms) = preSolution
Debug|Any CPU = Debug|Any CPU
@@ -33,6 +35,10 @@ Global
{51A60C77-3609-42BD-B0D9-83E1B61B6E69}.Debug|Any CPU.Build.0 = Debug|Any CPU
{51A60C77-3609-42BD-B0D9-83E1B61B6E69}.Release|Any CPU.ActiveCfg = Release|Any CPU
{51A60C77-3609-42BD-B0D9-83E1B61B6E69}.Release|Any CPU.Build.0 = Release|Any CPU
+ {DD7B30CE-773B-4752-9703-D0D5E6E4F376}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+ {DD7B30CE-773B-4752-9703-D0D5E6E4F376}.Debug|Any CPU.Build.0 = Debug|Any CPU
+ {DD7B30CE-773B-4752-9703-D0D5E6E4F376}.Release|Any CPU.ActiveCfg = Release|Any CPU
+ {DD7B30CE-773B-4752-9703-D0D5E6E4F376}.Release|Any CPU.Build.0 = Release|Any CPU
EndGlobalSection
GlobalSection(SolutionProperties) = preSolution
HideSolutionNode = FALSE
diff --git a/C#核心/Lesson12_继承-继承的基本概念练习/Lesson12_继承-继承的基本概念练习.csproj b/C#核心/Lesson12_继承-继承的基本概念练习/Lesson12_继承-继承的基本概念练习.csproj
new file mode 100644
index 0000000..8c374af
--- /dev/null
+++ b/C#核心/Lesson12_继承-继承的基本概念练习/Lesson12_继承-继承的基本概念练习.csproj
@@ -0,0 +1,11 @@
+
+
+
+ Exe
+ net8.0
+ Lesson12_继承_继承的基本概念练习
+ enable
+ enable
+
+
+
diff --git a/C#核心/Lesson12_继承-继承的基本概念练习/Program.cs b/C#核心/Lesson12_继承-继承的基本概念练习/Program.cs
new file mode 100644
index 0000000..d72b5f5
--- /dev/null
+++ b/C#核心/Lesson12_继承-继承的基本概念练习/Program.cs
@@ -0,0 +1,34 @@
+namespace Lesson12_继承_继承的基本概念练习
+{
+ class Human
+ {
+ public string name;
+ public int age;
+ public void Speak()
+ {
+ Console.WriteLine("说话");
+ }
+ }
+ class Warrior : Human
+ {
+ public int atk;
+ public void Attack()
+ {
+ Console.WriteLine("攻击");
+ }
+ }
+ internal class Program
+ {
+ static void Main(string[] args)
+ {
+ Console.WriteLine("Hello, World!");
+ Warrior w = new Warrior();
+ w.name = "HK";
+ w.age = 18;
+ w.Speak();
+ w.atk = 5;
+ w.Attack();
+
+ }
+ }
+}
diff --git a/C#核心/Lesson12_继承_继承的基本概念练习/Lesson12_继承-继承的基本概念练习.csproj b/C#核心/Lesson12_继承_继承的基本概念练习/Lesson12_继承-继承的基本概念练习.csproj
new file mode 100644
index 0000000..2150e37
--- /dev/null
+++ b/C#核心/Lesson12_继承_继承的基本概念练习/Lesson12_继承-继承的基本概念练习.csproj
@@ -0,0 +1,10 @@
+
+
+
+ Exe
+ net8.0
+ enable
+ enable
+
+
+
diff --git a/C#核心/Lesson12_继承_继承的基本概念练习/Program.cs b/C#核心/Lesson12_继承_继承的基本概念练习/Program.cs
new file mode 100644
index 0000000..d72b5f5
--- /dev/null
+++ b/C#核心/Lesson12_继承_继承的基本概念练习/Program.cs
@@ -0,0 +1,34 @@
+namespace Lesson12_继承_继承的基本概念练习
+{
+ class Human
+ {
+ public string name;
+ public int age;
+ public void Speak()
+ {
+ Console.WriteLine("说话");
+ }
+ }
+ class Warrior : Human
+ {
+ public int atk;
+ public void Attack()
+ {
+ Console.WriteLine("攻击");
+ }
+ }
+ internal class Program
+ {
+ static void Main(string[] args)
+ {
+ Console.WriteLine("Hello, World!");
+ Warrior w = new Warrior();
+ w.name = "HK";
+ w.age = 18;
+ w.Speak();
+ w.atk = 5;
+ w.Attack();
+
+ }
+ }
+}