data/books.txt

@@ -0,0 +1,25 @@
+My Third Book
+Zero 1
+000-000-111
+My Fouth Book
+1 Zero
+111-000-000
+My Fifth Book
+2 Zero
+222-000-000My Third Book
+Zero 1
+000-000-111
+My Fouth Book
+1 Zero
+111-000-000
+My Fifth Book
+2 Zero
+222-000-000My Third Book
+Zero 1
+000-000-111
+My Fouth Book
+1 Zero
+111-000-000
+My Fifth Book
+2 Zero
+222-000-000

data/students.test.txt

@@ -1,16 +0,0 @@
-Jon
-1101825
-Computer
-4
-88
-98
-52
-95
-Jon
-1101825
-Computer
-4
-88
-98
-52
-95

tests/bookNode.c

@@ -31,7 +31,7 @@ int main()
 
     // add book data
     add_book_data();
-
+    
     // display the books
     display();
 
@@ -230,9 +230,8 @@ void print_data(BOOK *book)
     while (temp->next != NULL)
     {
         temp = temp->next;
-        printf("\n\n============ %s ============\n", temp->title);
+        printf("\nBook title: %s\n", temp->title);
         printf("Book title: %s\n", temp->title);
-        printf("Book author: %s\n", temp->author);
-        printf("Book isbn: %s", temp->isbn);
+        printf("Book title: %s", temp->title);
     }
 }

work1/single.c

@@ -1,10 +1,6 @@
 #include "stdio.h"
 #include "stdlib.h"
 
-#define BUFFER_SIZE 128
-
-const char *FILE_STUDENT_DATA_PATH = "./data/students.test.txt";
-
 struct person_tag
 {
     char name[20];
@@ -24,12 +20,7 @@ struct student_tag
     struct person_tag student_info;
     struct course_tag course_info;
     struct student_tag *next;
-} * head;
-
-// typedef for declared to use as data type
-typedef struct person_tag PERSON;
-typedef struct course_tag COURSE;
-typedef struct student_tag STUDENT;
+};
 
 // core functions
 void display_students();
@@ -40,189 +31,27 @@ void update_file();
 void read_file();
 void quite();
 
-// Linked list functions
-void add_student(char *student_name, char *student_id, char *course_name, int no_of_units, int *marks);
-int count();
-
 // util functions
 void display_menu();
-void read_student_to_data();
-void print_welcome();
 
 int main(void)
 {
-    // variable use for menu selected
+    // varibales
     int selected;
 
-    print_welcome();
+    printf("Welcome!\n");
 
     display_menu();
 
-    display_students();
-
-    int c = count();
-
-    printf("Count: %d", c);
-
     printf("\nGoodbye!");
 }
 
-void print_welcome()
-{
-    printf("Welcome!\n");
-}
-
-void display_students()
-{
-    read_student_to_data();
-}
-
 void display_menu()
 {
-    printf("\n(1) Display students’ details\n");
+    printf("(1) Display students’ details\n");
     printf("(2) Search for a student’s mark\n");
     printf("(3) Find the details of student with the largest average\n");
     printf("(4) Find the details of failed students\n");
     printf("(5) Add new student to the record\n");
-    printf("(6) Quit program\n\n");
-}
-
-void add_student(char *student_name, char *student_id, char *course_name, int no_of_units, int *marks)
-{
-    STUDENT *temp, *iterator;
-    temp = (struct student_tag *)malloc(sizeof(struct student_tag));
-    PERSON info = {student_name, student_id};
-    COURSE course = {course_name, no_of_units, marks};
-    int sum = 0;
-    for (int i = 0; i < no_of_units; i++)
-    {
-        sum += marks[i];
-    }
-    course.avg = sum / no_of_units;
-    temp->student_info = info;
-    temp->course_info = course;
-    // reference in head
-    iterator = head;
-
-    if (head == NULL)
-    {
-        head = temp;
-        head->next = NULL;
-    }
-    else
-    {
-        while (iterator->next != NULL)
-        {
-            iterator = iterator->next;
-        }
-        temp->next = NULL;
-        iterator->next = temp;
-    }
-}
-
-void update_file()
-{
-    FILE *file;
-    file = fopen(FILE_STUDENT_DATA_PATH, "a");
-}
-
-void read_student_to_data()
-{
-    // init head to null
-    head = NULL;
-
-    FILE *file;
-    file = fopen(FILE_STUDENT_DATA_PATH, "r");
-
-    if (file == NULL)
-    {
-        printf("cannot read file: %s", FILE_STUDENT_DATA_PATH);
-        exit(EXIT_FAILURE);
-    }
-
-    char student_name[BUFFER_SIZE];
-    char student_id[BUFFER_SIZE];
-    char course_name[BUFFER_SIZE];
-    int no_of_units;
-    int marks[4];
-
-    int i;
-    while (!feof(file))
-    {
-        char no[BUFFER_SIZE];
-
-        fgets(student_name, sizeof student_name, file);
-        fgets(student_id, sizeof student_id, file);
-        fgets(course_name, sizeof course_name, file);
-        fgets(no, sizeof no, file);
-
-        i = 0;
-        while (student_name[i] != '\n')
-        {
-            i++;
-        }
-
-        student_name[i] = '\0';
-
-        i = 0;
-        while (student_id[i] != '\n')
-        {
-            i++;
-        }
-
-        student_id[i] = '\0';
-
-        i = 0;
-        while (course_name[i] != '\n')
-        {
-            i++;
-        }
-
-        course_name[i] = '\0';
-
-        printf("Student Name: %s\n", student_name);
-        printf("Student ID: %s\n", student_id);
-        printf("Course Name: %s\n", course_name);
-        printf("No of units: %s", no);
-
-        no_of_units = atoi(no);
-        for (int j = 0; j < no_of_units; j++)
-        {
-            char d[BUFFER_SIZE];
-
-            fgets(d, sizeof d, file);
-            sscanf(d, "%d", &marks[j]);
-        }
-
-        printf("Marks: [ ");
-        for (int x = 0; x < no_of_units; x++)
-        {
-            printf("%d ", marks[x]);
-        }
-        printf("]\n\n");
-
-        // add into linked list
-        add_student(student_name, student_id, course_name, no_of_units, marks);
-    }
-
-    fclose(file);
-}
-
-int count()
-{
-    int n = 1;
-    STUDENT *temp;
-    temp = head;
-    if (head == NULL)
-    {
-        return 0;
-    }
-
-    while (temp->next != NULL)
-    {
-        n++;
-        temp = temp->next;
-    }
-
-    return n;
+    printf("(6) Quit program\n");
 }