diff --git a/SampleCodes/charArray/strstrncpyFunction.cc b/SampleCodes/charArray/strstrncpyFunction.cc
new file mode 100644
index 00000000..e37cb409
--- /dev/null
+++ b/SampleCodes/charArray/strstrncpyFunction.cc
@@ -0,0 +1,72 @@
+str2에 str1의 문자열을 복사하시오.
+
+### 1. 제어문 사용
+```cpp
+#include <iostream>
+
+using namespace std;
+
+int main()
+{
+    char str1[27] = "programming is interesting";
+    char str2[27] = "difficult";
+    
+    for (i = 0; str1[i] != '\0'; i++)
+    {
+        str2[i] = str1[i];
+    }
+    cout << "str2 : " << str2 << endl;
+
+    return 0;
+}
+```
+
+### 2. strcpy 사용
+```cpp
+#include <iostream>
+
+#pragma warning(disable : 4996)
+
+using namespace std;
+
+int main()
+{
+    char str1[27] = "programming is interesting";
+    char str2[27] = "difficult";
+
+    cout << "str2: " << strcpy(str2, str1) << endl;
+
+    return 0;
+}
+```
+
+
+문자열이 담긴 배열 str1에서 ```interesting```을 찾아 다른 단어로 변경하고 변경됨을 확인할 수 있게 출력하시오.
+
+```cpp
+#include <iostream>
+#pragma warning(disable : 4996)
+
+using namespace std;
+
+int main(void)
+{
+    char str1[] = "programming is interesting";
+    char str2[] = "difficult";
+    char str3[] = "interesting";
+
+    char* ptr = strstr(str1, str3);
+
+    
+    cout << "str1 : " << str1 << endl;
+
+    strncpy(ptr, str2, 11);
+
+    cout << "str1 : " << str1 << endl;
+
+    return 0;
+}
+```
+
+
+```#pragma warning(disable : 4996)``` 'str~'을 사용했을 때 unsafe라는 오류가 뜸을 방지하기 위함.