diff --git a/thu_dsa/chp4/Stack.h b/thu_dsa/chp4/Stack.h
new file mode 100644
index 0000000..09e6b8f
--- /dev/null
+++ b/thu_dsa/chp4/Stack.h
@@ -0,0 +1,15 @@
+#ifndef STACK_H_
+#define STACK_H_
+
+#include "../chp2/Vector.h"
+
+template <typename T>
+class Stack: public Vector<T>{
+public:
+	//stack basic operations
+	void push(T const &e) { push_back(e); }
+	T    pop() { return pop_back(); }
+	T&   top() { return get(getSize() - 1); }
+};
+
+#endif
diff --git a/thu_dsa/chp4/testStack.cpp b/thu_dsa/chp4/testStack.cpp
new file mode 100644
index 0000000..6f70756
--- /dev/null
+++ b/thu_dsa/chp4/testStack.cpp
@@ -0,0 +1,39 @@
+#include "../chp2/Fib.h"
+#include "Stack.h"
+#include "time.h"
+#include <iostream>
+#include <cassert>
+
+#define SIZE 1000
+
+void test_basic();
+void test_capacity();
+
+int main(){
+	test_basic();
+	test_capacity();
+
+	system("pause");
+	return 0;
+}
+
+void test_basic(){
+	Stack<int> stack;
+	stack.push(2);
+	stack.push(7);
+	assert(stack.getSize() == 2);
+	assert(stack.top() == 7);
+	assert(stack.pop() == 7);
+	assert(stack.getSize() == 1);
+	assert(stack.top() == 2);
+	assert(stack.pop() == 2);
+	assert(stack.getSize() == 0);
+}
+
+void test_capacity(){
+	Stack<int> stack;
+	srand((unsigned)time(NULL));
+	for (int ix = 0; ix != SIZE; ++ix)
+		stack.push(rand());
+	assert(stack.getSize() == 1000);
+}