From 6e546a1d0f2b2f3ffa053ccd2f70d667ab5cf4bf Mon Sep 17 00:00:00 2001
From: Hyder Hadi <hyder@hyderhadi.xyz>
Date: Sat, 9 May 2026 17:14:50 +0300
Subject: Finished essential functions for the list

---
 simple-C-programs/DynamicStudentList.c | 118 ++++++++++++++++++++++++++++++---
 1 file changed, 110 insertions(+), 8 deletions(-)

(limited to 'simple-C-programs/DynamicStudentList.c')

diff --git a/simple-C-programs/DynamicStudentList.c b/simple-C-programs/DynamicStudentList.c
index 1626f42..ed363b9 100644
--- a/simple-C-programs/DynamicStudentList.c
+++ b/simple-C-programs/DynamicStudentList.c
@@ -3,12 +3,25 @@
 #include <string.h>
 
 
+
+/* Objectives:  
+    1- Make a bare functional list (Doubly linked list)
+    2- add the sort and the highest functions afterward
+    3- add more features if things are going ok
+    4- Care about Encapulation and Abstraction ideas ...
+*/
 struct Student {
   char *__name;
   int __mark;
   int __age;
   struct Student *__next;
   struct Student *__prev;
+
+
+  // Public Methods 
+  char *(*name) (struct Student *self);
+  int (*mark) (struct Student *self);
+  int (*age) (struct Student *self);
 };
 
 struct StudentList {
@@ -16,14 +29,14 @@ struct StudentList {
   struct Student *__tail;
   int __count;
 
-  // Methods
-  struct Student *(*highest) (struct StudentList self);
-  struct StudentList *(*sort) (struct StudentList self);
-  void (*put_student) (struct StudentList self, char *name, int age, int mark);
-  int (*size) (struct StudentList self);
-  void (*dump) (struct StudentList self);
-  struct Student *(*find) (struct StudentList self, char *name);
-  void (*destructor) (struct StudentList self);
+  // Methods (public)
+  struct Student *(*highest) (struct StudentList *self);
+  struct StudentList *(*sort) (struct StudentList *self);
+  void (*put_student) (struct StudentList *self, char *name, int age, int mark);
+  int (*size) (struct StudentList *self);
+  void (*dump) (struct StudentList *self);
+  struct Student *(*find) (struct StudentList *self, char *name);
+  void (*destructor) (struct StudentList *self);
 };
 
 // Private Functions
@@ -45,6 +58,8 @@ void __PUT (struct StudentList *self, char *name, int age, int mark) {
   
   struct Student *old, *new;
 
+  if (name == NULL) return;
+
   old = __FIND(self, name);
 
   if(old != NULL) {
@@ -53,10 +68,97 @@ void __PUT (struct StudentList *self, char *name, int age, int mark) {
     return;
   }
 
+  new = malloc(sizeof(*new));
+
+  new->__age = age;
+  new->__mark = mark;
+
+  new->__name = malloc(strlen(name) + 1);
+  strcpy(new->__name, name);
 
+  if(self->__head == NULL) {
+    self->__head = new;
+    self->__tail = new;
+    new->__next = NULL;
+    new->__prev = NULL;
+    self->__count++;
+    return;
+  }
+
+  self->__tail->__next = new;
+  new->__prev = self->__tail;
+  new->__next = NULL;
+  self->__tail = new;
+
+  self->__count++;
 }
 
+int __SIZE (struct StudentList *self) {
+
+  return self->__count;
+}
+
+void __DUMP (struct StudentList *self) {
+
+  struct Student *current;
+
+  for(current = self->__head; current != NULL;current = current->__next) {
+
+    printf("Name: %s\nAge: %d\nMark: %d\n", current->__name, current->__age, current->__mark);
+  }
+}
+
+void __Destructor (struct StudentList *self) {
+
+  struct Student *current, *tmp;
+
+  current = self->__head;
 
+  while(current) {
+    free(current->__name);
+    tmp = current->__next;
+    free(current);
+    current = tmp;
+  }
+
+  free(self);
+}
+
+char *__NAME (struct Student *self) {
+  return self->__name;
+}
+
+int __AGE (struct Student *self) {
+  return self->__age;
+}
+
+int __MARK (struct Student *self) {
+  return self->__mark;
+}
+
+
+
+
+
+// The CONSTRUCTOR (Public)
+
+struct StudentList *STUDENTLIST() {
+
+  struct StudentList *S = malloc(sizeof(*S));
+
+  S->__head = NULL;
+  S->__tail = NULL;
+  S->__count = 0;
+
+  // Methods 
+  S->put_student = &__PUT;
+  S->size = &__SIZE;
+  S->dump = &__DUMP;
+  S->find = &__FIND;
+  S->destructor = &__Destructor;
+
+  return S;
+}
 
 
 int main() {
-- 
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