3 files changed, 90 insertions, 0 deletions
diff --git a/Big4_basic_examples/TestClass/Source.cpp b/Big4_basic_examples/TestClass/Source.cpp
new file mode 100644
index 0000000..bdb8002
--- /dev/null
+++ b/Big4_basic_examples/TestClass/Source.cpp
@@ -0,0 +1,20 @@
+#include <iostream>
+#include "TestClass.h"
+
+using namespace std;
+
+
+int main()
+{
+	TestClass obj1(3, 3, "abc");
+
+	TestClass obj2(obj1);//copy const;
+
+	TestClass obj3(3, 1, "333");
+
+	obj3 = obj1; // operator=;
+
+	TestClass obj4 = obj3; ////copy const;
+
+
+} //destructors
+\ No newline at end of file
diff --git a/Big4_basic_examples/TestClass/TestClass.cpp b/Big4_basic_examples/TestClass/TestClass.cpp
new file mode 100644
index 0000000..fe5692b
--- /dev/null
+++ b/Big4_basic_examples/TestClass/TestClass.cpp
@@ -0,0 +1,45 @@
+#include "TestClass.h"
+
+
+TestClass::TestClass() : TestClass(0, 0, "Unknown")
+{
+
+}
+TestClass::TestClass(int a, int b, const char* str)
+{
+	this->a = a;
+	this->b = b;
+	name = new char[strlen(str) + 1];
+	strcpy(name, str);
+}
+TestClass::TestClass(const TestClass& other)
+{
+	CopyFrom(other);
+	//name = other.name  NO! only the pointer will be copied.
+}
+
+TestClass& TestClass::operator=(const TestClass& other)
+{
+	if (this != &other)
+	{
+		Free();
+		CopyFrom(other);
+	}
+	return *this; // this   TestClass*
+}
+TestClass::~TestClass()
+{
+	Free();
+}
+void TestClass::CopyFrom(const TestClass& other)
+{
+	name = new char[strlen(other.name) + 1];
+	strcpy(name, other.name);
+	a = other.a;
+	b = other.b;
+}
+void TestClass::Free()
+{
+	delete[] name;
+	a = b = 0;
+}
diff --git a/Big4_basic_examples/TestClass/TestClass.h b/Big4_basic_examples/TestClass/TestClass.h
new file mode 100644
index 0000000..4841785
--- /dev/null
+++ b/Big4_basic_examples/TestClass/TestClass.h
@@ -0,0 +1,25 @@
+#include <iostream>
+class TestClass
+{
+private:
+
+	void CopyFrom(const TestClass& other);
+	void Free();
+	int a;
+	int b;
+	char* name;
+
+public:
+
+
+	TestClass(int a, int b, const char* str);
+	
+	// big4
+	TestClass();
+	TestClass(const TestClass& other);
+	TestClass& operator=(const TestClass& other);
+	~TestClass();
+
+	void Print() const;
+
+};