diff --git a/TinySTL/UninitializedFunctions.h b/TinySTL/UninitializedFunctions.h
new file mode 100644
index 0000000..8869b1e
--- /dev/null
+++ b/TinySTL/UninitializedFunctions.h
@@ -0,0 +1,102 @@
+#ifndef _UNINITIALIZED_FUNCTIONS_H_
+#define _UNINITIALIZED_FUNCTIONS_H_
+
+#include "Construct.h"
+#include "Iterator.h"
+#include "TypeTraits.h"
+
+#include <cstring>
+
+namespace TinySTL{
+
+	/***************************************************************************/
+	template<class InputIterator, class ForwardIterator>
+	ForwardIterator _uninitialized_copy_aux(InputIterator first, InputIterator last,
+		ForwardIterator result, _true_type);
+	template<class InputIterator, class ForwardIterator>
+	ForwardIterator _uninitialized_copy_aux(InputIterator first, InputIterator last,
+		ForwardIterator result, _false_type);
+
+	template<class InputIterator, class ForwardIterator>
+	ForwardIterator uninitialized_copy(InputIterator first, InputIterator last, ForwardIterator result){
+		typedef typename _type_traits<iterator_traits<InputIterator>::value_type>::is_POD_type isPODType;
+		return _uninitialized_copy_aux(first, last, result, isPODType());
+	}
+	template<class InputIterator, class ForwardIterator>
+	ForwardIterator _uninitialized_copy_aux(InputIterator first, InputIterator last,
+		ForwardIterator result, _true_type){
+		memcpy(result, first, (last - first) * sizeof(*first));
+		return result + (last - first);
+	}
+	template<class InputIterator, class ForwardIterator>
+	ForwardIterator _uninitialized_copy_aux(InputIterator first, InputIterator last,
+		ForwardIterator result, _false_type){
+		int i = 0;
+		for (; first != last; ++first, ++i){
+			construct((result + i), *first);
+		}
+		return (result + i);
+	}
+
+	/***************************************************************************/
+	template<class ForwardIterator, class T>
+	void _uninitialized_fill_aux(ForwardIterator first, ForwardIterator last,
+		const T& value, _true_type);
+	template<class ForwardIterator, class T>
+	void _uninitialized_fill_aux(ForwardIterator first, ForwardIterator last,
+		const T& value, _false_type);
+
+	template<class ForwardIterator, class T>
+	void uninitialized_fill(ForwardIterator first, ForwardIterator last, const T& value){
+		typedef typename _type_traits<T>::is_POD_type isPODType;
+		_uninitialized_fill_aux(first, last, value, isPODType());
+	}
+	template<class ForwardIterator, class T>
+	void _uninitialized_fill_aux(ForwardIterator first, ForwardIterator last,
+		const T& value, _true_type){
+		//TODO
+		//换成自己的fill函数
+		std::fill(first, last, value);
+	}
+	template<class ForwardIterator, class T>
+	void _uninitialized_fill_aux(ForwardIterator first, ForwardIterator last,
+		const T& value, _false_type){
+		int i = 0;
+		for (; first != last; ++first, ++i){
+			construct(first, value);
+		}
+	}
+
+	/***************************************************************************/
+	template<class ForwardIterator, class Size, class T>
+	ForwardIterator _uninitialized_n_fill_aux(ForwardIterator first,
+		Size n, const T& x, _true_type);
+	template<class ForwardIterator, class Size, class T>
+	ForwardIterator _uninitialized_n_fill_aux(ForwardIterator first,
+		Size n, const T& x, _false_type);
+
+	template<class ForwardIterator, class Size, class T>
+	inline ForwardIterator uninitialized_fill_n(ForwardIterator first,
+		Size n, const T& x){
+		typedef typename _type_traits<T>::is_POD_type isPODType;
+		return _uninitialized_n_fill_aux(first, n, x, isPODType());
+	}
+	template<class ForwardIterator, class Size, class T>
+	ForwardIterator _uninitialized_n_fill_aux(ForwardIterator first,
+		Size n, const T& x, _true_type){
+		//TODO
+		//换成自己的fill_n函数
+		return std::fill_n(first, n, x);
+	}
+	template<class ForwardIterator, class Size, class T>
+	ForwardIterator _uninitialized_n_fill_aux(ForwardIterator first,
+		Size n, const T& x, _false_type){
+		int i = 0;
+		for (; i != n;){
+			construct((first + i), x);
+		}
+		return (first + i);
+	}
+}
+
+#endif
\ No newline at end of file
diff --git a/TinySTL/main.cpp b/TinySTL/main.cpp
index d56e9f6..224c42f 100644
--- a/TinySTL/main.cpp
+++ b/TinySTL/main.cpp
@@ -17,7 +17,7 @@ int main(){
 	auto last = p + 100;
 	int array[100];
 	TinySTL::uninitialized_fill_n(array, 100, 88);
-	for (auto n : array){ cout << n << endl; }
+	for (auto n : array){ cout << n << endl; } 
 	system("pause");
 	return 0;
 }
\ No newline at end of file