diff --git a/homework2/CMakeLists.txt b/homework2/CMakeLists.txt
index a8d698f..1fc8119 100644
--- a/homework2/CMakeLists.txt
+++ b/homework2/CMakeLists.txt
@@ -14,3 +14,7 @@ add_executable(test3 test3.cpp
         LinkList.h
         LinkList.cpp
 )
+add_executable(test4 test4.cpp
+        LinkList.h
+        LinkList.cpp
+)
diff --git a/homework2/test3.cpp b/homework2/test3.cpp
index 11489e2..357f3f3 100644
--- a/homework2/test3.cpp
+++ b/homework2/test3.cpp
@@ -1,6 +1,6 @@
 //test3.cpp
 #include <iostream>
-#include"LinkList.h"
+#include"LinkList.h"    //LinkList类见实验一
 using namespace std;
 
 void alter_to_110_percent(bookList &l) {
diff --git a/homework2/test4.cpp b/homework2/test4.cpp
new file mode 100644
index 0000000..1ec628d
--- /dev/null
+++ b/homework2/test4.cpp
@@ -0,0 +1,31 @@
+//test4.cpp
+#include<iostream>
+#include"LinkList.h"    //LinkList类见实验一
+using namespace std;
+
+void create_with_count(bookList &l, int count) {
+    bookNode *input = new bookNode;
+    input->next = NULL;
+    bookNode *temp = l;
+    for (int i = 0; i < count; i++) {
+        cin >> input->id >> input->name >> input->price;
+        if (temp == l) {
+            l->next = input;
+        } else {
+            temp->next = input;
+        }
+        temp = input;
+        input = new bookNode;
+        input->next = NULL;
+    }
+}
+
+int main() {
+    bookList books = new bookNode;
+    books->next = NULL;
+    int count;
+    cin >> count;
+    create_with_count(books, count);
+    display(&books);
+    return 0;
+}