diff --git a/Project2/Debug/Project2.log b/Project2/Debug/Project2.log
index 259d036..f7f75f8 100644
--- a/Project2/Debug/Project2.log
+++ b/Project2/Debug/Project2.log
@@ -1,2 +1,9 @@
-  main.c
+  linked_list_stack.c
+  sq_list.c
+C:\code\lencode\Project2\sq_list.c(102,9): warning C4033: “locate_list”必须返回值
+C:\code\lencode\Project2\sq_list.c(112,9): warning C4033: “locate_list”必须返回值
+C:\code\lencode\Project2\sq_list.c(166,34): warning C4047: “函数”:“int”与“sq_list *”的间接级别不同
+C:\code\lencode\Project2\sq_list.c(166,34): warning C4024: “locate_list”: 形参和实参 2 的类型不同
+  正在生成代码...
+C:\code\lencode\Project2\sq_list.c(116,1): warning C4715: “locate_list”: 不是所有的控件路径都返回值
   Project2.vcxproj -> C:\code\lencode\Project2\Debug\Project2.exe
diff --git a/Project2/Debug/Project2.tlog/CL.command.1.tlog b/Project2/Debug/Project2.tlog/CL.command.1.tlog
index 5c9a976..d6b583e 100644
Binary files a/Project2/Debug/Project2.tlog/CL.command.1.tlog and b/Project2/Debug/Project2.tlog/CL.command.1.tlog differ
diff --git a/Project2/Debug/Project2.tlog/CL.read.1.tlog b/Project2/Debug/Project2.tlog/CL.read.1.tlog
index a8ecbf7..a48189b 100644
Binary files a/Project2/Debug/Project2.tlog/CL.read.1.tlog and b/Project2/Debug/Project2.tlog/CL.read.1.tlog differ
diff --git a/Project2/Debug/Project2.tlog/CL.write.1.tlog b/Project2/Debug/Project2.tlog/CL.write.1.tlog
index 6fe6733..6dfaeb0 100644
Binary files a/Project2/Debug/Project2.tlog/CL.write.1.tlog and b/Project2/Debug/Project2.tlog/CL.write.1.tlog differ
diff --git a/linked_list.c b/linked_list.c
index d2774ea..2a1b631 100644
--- a/linked_list.c
+++ b/linked_list.c
@@ -2,69 +2,73 @@
 #include <stdlib.h>
 #include "linked_list.h"
 
-
-
 // ��ʼ��ֵ
-node* init_node(int val)
+node* init_node(elem_type value)
 {
 	node* new_node = (node*)malloc(sizeof(node));
-	new_node->value = val;
+	new_node->value = value;
 	new_node->next = NULL;
 	return new_node;
 }
 
-
 // ɾ����һ���ڵ�
 void delete_node(node* n)
 {
-  n->next = n->next->next;
-  free(n->next);
+	if (n->next != NULL) {
+		node* temp = n->next;
+		n->next = n->next->next;
+		free(temp);
+	}
 }
 
 // �滻�ڵ�ֵ
-void replace_node(node* n, int val)
+void replace_node(node* n, elem_type value)
 {
-	n->value = val;
+	n->value = value;
 }
 
 // ����ڵ�
-void insert_node(node* head, int val)
+void insert_node(node* head, elem_type value)
 {
-	node* new_node = init_node(val);
+	node* new_node = init_node(value);
 	new_node->next = head->next->next;
 	head->next = new_node;
 }
 
 // ���ʽڵ�
-
 int get_node(node* n)
 {
 	return n->value;
 }
 
 // ����
-address_node *find_node(node* head, int val)
+address_node *find_node(node* head, elem_type value)
 {
 	address_node* n = (address_node*)malloc(sizeof(address_node));
+	if (n == NULL) {
+		printf("�ڴ����ʧ��\n");
+		return NULL;
+	}
 	n->n = 0;
 	n->p = head;
-	while(1) 
+	while (head != NULL) 
 	{
-		if (head->value == val)
+		if (head->value == value)
 			return n;
 		n->n += 1;
 		head = head->next;
 	}
 	printf("�޷��ҵ��ڵ�\n");
-	return -1;
+	free(n);
+	return NULL;
 }
 
 // ��ӡ����
 void print_node_list(node* head)
 {
 	while (head->next != NULL)
-		{
-		   head = head->next;
-		   printf("%d ", head->value);
-		}
+	{
+		head = head->next;
+		printf("%d ", head->value);
+	}
 }
\ No newline at end of file
diff --git a/linked_list.h b/linked_list.h
index 984b3c7..d095e8a 100644
--- a/linked_list.h
+++ b/linked_list.h
@@ -1,9 +1,10 @@
 #ifndef LINKED_LIST_H
 #define LINKED_LIST_H
+#define elem_type int
 
 typedef struct node
 {
-    int value;
+     elem_type value;
     struct node* next;
 } node;
 
@@ -15,22 +16,22 @@ typedef struct address_node
 
 
 // ��ʼ���ڵ�
-node* init_node(int val);
+node* init_node(elem_type value);
 
 // ɾ����һ���ڵ�
 void delete_node(node* n);
 
 // �滻�ڵ�
-void replace_node (node* n, int val);
+void replace_node (node* n, elem_type value);
 
 // ����ڵ�
-void insert_node(node** head, int val);
+void insert_node(node* head, elem_type value);
 
 //���ʽڵ�
 int get_node(node* n);
 
 // ����
-address_node *find_node(node* head, int val);
+address_node *find_node(node* head, elem_type value);
 
 // ��ӡ����
 void print_node_list(node* head);
diff --git a/linked_list_stack.c b/linked_list_stack.c
index a4161ed..d1e8e90 100644
--- a/linked_list_stack.c
+++ b/linked_list_stack.c
@@ -12,7 +12,7 @@ stack_linked* init_stack_linked(void)
 }
 
 // ��ջ
-void push_stack_linked(stack_linked* s, int value)
+void push_stack_linked(stack_linked* s, elem_type value)
 {
 	stack_node* node = (stack_node*)malloc(sizeof(stack_node));
 	node->value = value;
diff --git a/linked_list_stack.h b/linked_list_stack.h
index dc7bea1..46f4765 100644
--- a/linked_list_stack.h
+++ b/linked_list_stack.h
@@ -1,9 +1,10 @@
 #ifndef LINKED_LIST_STACK_H
 #define LINKED_LIST_STACK_H
+#define elem_type int
 
 typedef struct stack_node
 {
-	int value;
+	elem_type value;
 	struct stack_node *next;
 
 }stack_node;
@@ -18,7 +19,7 @@ typedef struct stack_linked
 stack_linked* init_stack_linked(void);
 
 // ��ջ
-void push_stack_linked(stack_linked* s, int value);
+void push_stack_linked(stack_linked* s, elem_type value);
 
 // ��ջ
 int pop_stack_linked(stack_linked* s);
diff --git a/sq_list.c b/sq_list.c
index 92cb36d..f698f29 100644
--- a/sq_list.c
+++ b/sq_list.c
@@ -31,7 +31,7 @@ void delete_sq_list(sq_list* list,int pos)
 }
 
 // �滻
-void replace_sq_list(sq_list* list, int pos, int value)
+void replace_sq_list(sq_list* list, int pos, elem_type value)
 {
     if (pos < 0 || pos > list->length || list->length >= MAX)
     {
@@ -45,7 +45,7 @@ void replace_sq_list(sq_list* list, int pos, int value)
 
 
 // ����
-void insert_sq_list(sq_list* list, int pos, int value)
+void insert_sq_list(sq_list* list, int pos, elem_type value)
 {
     if (pos < 0 || pos > list->length || list->length >= MAX)
     {
@@ -81,7 +81,7 @@ void print_sq_list(sq_list* list)
 }
 
 //���Ԫ��
-void get_sq_list(sq_list* list1, int pos, int*e)
+void get_sq_list(sq_list* list1, int pos, elem_type*e)
 {
     if (list1->length == 0 || pos<0 || pos>list1->length)
     {
@@ -93,7 +93,7 @@ void get_sq_list(sq_list* list1, int pos, int*e)
 }
 
 //����
-int locate_list(sq_list* list, int *e)
+int locate_list(sq_list* list, elem_type e)
 {
     int i = 0;
     if (list->length == 0)
@@ -122,7 +122,7 @@ void merge_sq_list(sq_list* list_1, sq_list* list_2)
 {
     if (list_1->length == 0 || list_2->length == 0)
     {
-        printf("��һ���ձ�\n");
+        printf("������һ���ձ�\n");
         return;
     }
     if ((list_1->length + list_2->length) > MAX)
diff --git a/sq_list.h b/sq_list.h
index 7dd531a..4a600b1 100644
--- a/sq_list.h
+++ b/sq_list.h
@@ -1,11 +1,12 @@
 #ifndef SQ_LIST_H
 #define SQ_LIST_H
 #define MAX 100
+#define elem_type int
 
 
 typedef struct sq_list
 {
-    int data[MAX];
+    elem_type data[MAX];
     int length;
 } sq_list;
 
@@ -16,19 +17,19 @@ sq_list *init_sq_list(void);
 void delete_sq_list(sq_list* list, int pos);
 
 // �滻
-void replace_sq_list(sq_list* list, int pos, int value);
+void replace_sq_list(sq_list* list, int pos, elem_type value);
 
 // ����
-void insert_sq_list(sq_list* list, int pos, int value);
+void insert_sq_list(sq_list* list, int pos, elem_type value);
 
 // ��ӡ
 void print_sq_list(sq_list* list);
 
 //���Ԫ��
-void get_sq_list(sq_list* list1,int pos, int *e);
+void get_sq_list(sq_list* list1,int pos, elem_type *e);
 
 //����
-int locate_list(sq_list* list, int e);
+int locate_list(sq_list* list, elem_type e);
 
 // �ϲ�˳���1.0
 void merge_sq_list(sq_list* list_1, sq_list* list_2);