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homework2/CMakeLists.txt

@@ -3,5 +3,6 @@ project(homework2)
 
 set(CMAKE_CXX_STANDARD 20)
 
-add_executable(Test_LinkList LinkLits.cpp
-        Test_LinkList.cpp)
+add_executable(test1 LinkLits.cpp
+        test1.cpp
+        LinkList.h)

homework2/LinkList.h

@@ -0,0 +1,19 @@
+#ifndef LINKLIST_H
+#define LINKLIST_H
+#include<string>
+using namespace std;
+
+typedef struct bookNode {
+    string id;
+    string name;
+    double price;
+    bookNode *next;
+} book_node, *bookList;
+
+bool isEmpty(bookList);
+
+void insert(bookList &l);
+
+void display(bookList *l);
+
+#endif //LINKLIST_H

homework2/LinkLits.cpp

@@ -1,23 +1,19 @@
 #include <iostream>
 #include<iomanip>
+#include"LinkList.h"
 using namespace std;
 
-typedef struct bookNode {
-    string id;
-    string name;
-    double price;
-    bookNode *next;
-} book_node, *bookList;
 
-bool is_list_empty(bookList *l) {
+bool isEmpty(bookList *l) {
     if ((*l)->next == NULL) {
         return true;
     }
     return false;
 }
 
+
 void display(bookList *l) {
-    if (is_list_empty(l)) {
+    if (isEmpty(l)) {
         printf("List is empty\n");
     } else {
         bookNode *temp = (*l)->next;

homework2/test1.cpp

@@ -1,13 +1,13 @@
 #include <iostream>
-#include "LinkLits.cpp"
+#include "LinkList.h"
 using namespace std;
 
-void insert(bookList *l) {
-    bookNode *temp = (*l)->next;
+void insert(bookList &l) {
+    bookNode *temp = l;
     while (temp != NULL) {
         cin >> (*temp).id >> (*temp).name >> (*temp).price;
-        if (!(((*temp).id == "" && (*temp).name == "" && (*temp).price == 0))) {
-            temp = (*temp).next;
+        if (!(((*temp).id == "0" && (*temp).name == "0" && (*temp).price == 0))) {
+            temp = (*temp).next = new bookNode;
         } else {
             temp = NULL;
         }
@@ -17,7 +17,7 @@ void insert(bookList *l) {
 int main() {
     bookList books = new bookNode;
     books->next = NULL;
-    insert(&books);
+    insert(books);
     display(&books);
     return 0;
 }